Home / 712,932,143.80-1,069,398,215.70-687,104,111.20

Finding the Fourth Proportional to 712,932,143.80, 1,069,398,215.70 and 687,104,111.20

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Solution

The fourth proportional to 712,932,143.80, 1,069,398,215.70 and 687,104,111.20 is: 1,030,656,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,932,143.80 : 1,069,398,215.70 = 687,104,111.20 : x
  2. Step 2: Convert to fraction form
    712,932,143.80/1,069,398,215.70 = 687,104,111.20/x
  3. Step 3: Cross multiply
    712,932,143.80x = 1,069,398,215.70 × 687,104,111.20
  4. Step 4: Simplify right side
    712,932,143.80x = 734,787,910,517,414,528
  5. Step 5: Solve for x
    x = 734,787,910,517,414,528/712,932,143.80
  6. Step 6: Final answer
    x = 1,030,656,166.80

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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.