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Finding the Fourth Proportional to 578,149.28, 866,101.80 and 426,070.16

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Solution

The fourth proportional to 578,149.28, 866,101.80 and 426,070.16 is: 638,278.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,149.28 : 866,101.80 = 426,070.16 : x
  2. Step 2: Convert to fraction form
    578,149.28/866,101.80 = 426,070.16/x
  3. Step 3: Cross multiply
    578,149.28x = 866,101.80 × 426,070.16
  4. Step 4: Simplify right side
    578,149.28x = 369,020,132,502.29
  5. Step 5: Solve for x
    x = 369,020,132,502.29/578,149.28
  6. Step 6: Final answer
    x = 638,278.29

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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.