Home / 868,329.71-1,198,880.15-542,139.87

Finding the Fourth Proportional to 868,329.71, 1,198,880.15 and 542,139.87

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Solution

The fourth proportional to 868,329.71, 1,198,880.15 and 542,139.87 is: 748,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,329.71 : 1,198,880.15 = 542,139.87 : x
  2. Step 2: Convert to fraction form
    868,329.71/1,198,880.15 = 542,139.87/x
  3. Step 3: Cross multiply
    868,329.71x = 1,198,880.15 × 542,139.87
  4. Step 4: Simplify right side
    868,329.71x = 649,960,728,666.58
  5. Step 5: Solve for x
    x = 649,960,728,666.58/868,329.71
  6. Step 6: Final answer
    x = 748,518.36

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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.