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Finding the Fourth Proportional to 572,627.43, 790,227.27 and 317,978.60

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Solution

The fourth proportional to 572,627.43, 790,227.27 and 317,978.60 is: 438,811.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,627.43 : 790,227.27 = 317,978.60 : x
  2. Step 2: Convert to fraction form
    572,627.43/790,227.27 = 317,978.60/x
  3. Step 3: Cross multiply
    572,627.43x = 790,227.27 × 317,978.60
  4. Step 4: Simplify right side
    572,627.43x = 251,275,357,045.29
  5. Step 5: Solve for x
    x = 251,275,357,045.29/572,627.43
  6. Step 6: Final answer
    x = 438,811.25

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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.