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Finding the Fourth Proportional to 488,642.67, 729,621.71 and 437,712.91

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Solution

The fourth proportional to 488,642.67, 729,621.71 and 437,712.91 is: 653,575.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,642.67 : 729,621.71 = 437,712.91 : x
  2. Step 2: Convert to fraction form
    488,642.67/729,621.71 = 437,712.91/x
  3. Step 3: Cross multiply
    488,642.67x = 729,621.71 × 437,712.91
  4. Step 4: Simplify right side
    488,642.67x = 319,364,841,153.50
  5. Step 5: Solve for x
    x = 319,364,841,153.50/488,642.67
  6. Step 6: Final answer
    x = 653,575.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.