Home / 1,290,111,005.80-1,935,166,508.70-472,809,860.20

Finding the Fourth Proportional to 1,290,111,005.80, 1,935,166,508.70 and 472,809,860.20

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Solution

The fourth proportional to 1,290,111,005.80, 1,935,166,508.70 and 472,809,860.20 is: 709,214,790.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,111,005.80 : 1,935,166,508.70 = 472,809,860.20 : x
  2. Step 2: Convert to fraction form
    1,290,111,005.80/1,935,166,508.70 = 472,809,860.20/x
  3. Step 3: Cross multiply
    1,290,111,005.80x = 1,935,166,508.70 × 472,809,860.20
  4. Step 4: Simplify right side
    1,290,111,005.80x = 914,965,806,442,169,088
  5. Step 5: Solve for x
    x = 914,965,806,442,169,088/1,290,111,005.80
  6. Step 6: Final answer
    x = 709,214,790.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.