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Finding the Fourth Proportional to 488,889.30, 732,459.15 and 399,659.70

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Solution

The fourth proportional to 488,889.30, 732,459.15 and 399,659.70 is: 598,774.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,889.30 : 732,459.15 = 399,659.70 : x
  2. Step 2: Convert to fraction form
    488,889.30/732,459.15 = 399,659.70/x
  3. Step 3: Cross multiply
    488,889.30x = 732,459.15 × 399,659.70
  4. Step 4: Simplify right side
    488,889.30x = 292,734,404,151.26
  5. Step 5: Solve for x
    x = 292,734,404,151.26/488,889.30
  6. Step 6: Final answer
    x = 598,774.41

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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.