Home / 868,328.71-1,198,878.77-542,138.87

Finding the Fourth Proportional to 868,328.71, 1,198,878.77 and 542,138.87

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Solution

The fourth proportional to 868,328.71, 1,198,878.77 and 542,138.87 is: 748,516.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,328.71 : 1,198,878.77 = 542,138.87 : x
  2. Step 2: Convert to fraction form
    868,328.71/1,198,878.77 = 542,138.87/x
  3. Step 3: Cross multiply
    868,328.71x = 1,198,878.77 × 542,138.87
  4. Step 4: Simplify right side
    868,328.71x = 649,958,781,634.79
  5. Step 5: Solve for x
    x = 649,958,781,634.79/868,328.71
  6. Step 6: Final answer
    x = 748,516.98

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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.