Home / 572,281.20-857,687.40-319,561.20

Finding the Fourth Proportional to 572,281.20, 857,687.40 and 319,561.20

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Solution

The fourth proportional to 572,281.20, 857,687.40 and 319,561.20 is: 478,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,281.20 : 857,687.40 = 319,561.20 : x
  2. Step 2: Convert to fraction form
    572,281.20/857,687.40 = 319,561.20/x
  3. Step 3: Cross multiply
    572,281.20x = 857,687.40 × 319,561.20
  4. Step 4: Simplify right side
    572,281.20x = 274,083,614,768.88
  5. Step 5: Solve for x
    x = 274,083,614,768.88/572,281.20
  6. Step 6: Final answer
    x = 478,931.71

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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.