Home / 1,209,464,179.50-1,668,169,389.15-912,118,938.06

Finding the Fourth Proportional to 1,209,464,179.50, 1,668,169,389.15 and 912,118,938.06

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Solution

The fourth proportional to 1,209,464,179.50, 1,668,169,389.15 and 912,118,938.06 is: 1,258,052,051.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,464,179.50 : 1,668,169,389.15 = 912,118,938.06 : x
  2. Step 2: Convert to fraction form
    1,209,464,179.50/1,668,169,389.15 = 912,118,938.06/x
  3. Step 3: Cross multiply
    1,209,464,179.50x = 1,668,169,389.15 × 912,118,938.06
  4. Step 4: Simplify right side
    1,209,464,179.50x = 1,521,568,891,735,696,896
  5. Step 5: Solve for x
    x = 1,521,568,891,735,696,896/1,209,464,179.50
  6. Step 6: Final answer
    x = 1,258,052,051.09

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Half scale
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Double scale
Find fourth proportional to 1,209,464,180.50, 1,668,169,390.53 and 912,118,939.06
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.