Home / 724,256.17-1,086,384.18-386,272.87

Finding the Fourth Proportional to 724,256.17, 1,086,384.18 and 386,272.87

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Solution

The fourth proportional to 724,256.17, 1,086,384.18 and 386,272.87 is: 579,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,256.17 : 1,086,384.18 = 386,272.87 : x
  2. Step 2: Convert to fraction form
    724,256.17/1,086,384.18 = 386,272.87/x
  3. Step 3: Cross multiply
    724,256.17x = 1,086,384.18 × 386,272.87
  4. Step 4: Simplify right side
    724,256.17x = 419,640,735,131.20
  5. Step 5: Solve for x
    x = 419,640,735,131.20/724,256.17
  6. Step 6: Final answer
    x = 579,409.26

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1.5x scale

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.