Home / 1,243,205,066.16-1,715,614,263.71-678,689,947.72

Finding the Fourth Proportional to 1,243,205,066.16, 1,715,614,263.71 and 678,689,947.72

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Solution

The fourth proportional to 1,243,205,066.16, 1,715,614,263.71 and 678,689,947.72 is: 936,587,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,205,066.16 : 1,715,614,263.71 = 678,689,947.72 : x
  2. Step 2: Convert to fraction form
    1,243,205,066.16/1,715,614,263.71 = 678,689,947.72/x
  3. Step 3: Cross multiply
    1,243,205,066.16x = 1,715,614,263.71 × 678,689,947.72
  4. Step 4: Simplify right side
    1,243,205,066.16x = 1,164,370,154,954,944,256
  5. Step 5: Solve for x
    x = 1,164,370,154,954,944,256/1,243,205,066.16
  6. Step 6: Final answer
    x = 936,587,363.30

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Double scale
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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.