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Finding the Fourth Proportional to 574,278.39, 861,609.40 and 254,386.80

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Solution

The fourth proportional to 574,278.39, 861,609.40 and 254,386.80 is: 381,665.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,278.39 : 861,609.40 = 254,386.80 : x
  2. Step 2: Convert to fraction form
    574,278.39/861,609.40 = 254,386.80/x
  3. Step 3: Cross multiply
    574,278.39x = 861,609.40 × 254,386.80
  4. Step 4: Simplify right side
    574,278.39x = 219,182,057,479.95
  5. Step 5: Solve for x
    x = 219,182,057,479.95/574,278.39
  6. Step 6: Final answer
    x = 381,665.17

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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.