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Finding the Fourth Proportional to 576,442.20, 864,663.30 and 399,295.20

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Solution

The fourth proportional to 576,442.20, 864,663.30 and 399,295.20 is: 598,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,442.20 : 864,663.30 = 399,295.20 : x
  2. Step 2: Convert to fraction form
    576,442.20/864,663.30 = 399,295.20/x
  3. Step 3: Cross multiply
    576,442.20x = 864,663.30 × 399,295.20
  4. Step 4: Simplify right side
    576,442.20x = 345,255,905,306.16
  5. Step 5: Solve for x
    x = 345,255,905,306.16/576,442.20
  6. Step 6: Final answer
    x = 598,942.80

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Similar ratio
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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.