Home / 712,932,143.30-1,069,398,214.95-687,104,110.70

Finding the Fourth Proportional to 712,932,143.30, 1,069,398,214.95 and 687,104,110.70

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Solution

The fourth proportional to 712,932,143.30, 1,069,398,214.95 and 687,104,110.70 is: 1,030,656,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,932,143.30 : 1,069,398,214.95 = 687,104,110.70 : x
  2. Step 2: Convert to fraction form
    712,932,143.30/1,069,398,214.95 = 687,104,110.70/x
  3. Step 3: Cross multiply
    712,932,143.30x = 1,069,398,214.95 × 687,104,110.70
  4. Step 4: Simplify right side
    712,932,143.30x = 734,787,909,467,387,264
  5. Step 5: Solve for x
    x = 734,787,909,467,387,264/712,932,143.30
  6. Step 6: Final answer
    x = 1,030,656,166.05

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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.