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Finding the Fourth Proportional to 721,537.76, 995,654.30 and 488,490.63

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Solution

The fourth proportional to 721,537.76, 995,654.30 and 488,490.63 is: 674,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,537.76 : 995,654.30 = 488,490.63 : x
  2. Step 2: Convert to fraction form
    721,537.76/995,654.30 = 488,490.63/x
  3. Step 3: Cross multiply
    721,537.76x = 995,654.30 × 488,490.63
  4. Step 4: Simplify right side
    721,537.76x = 486,367,795,693.61
  5. Step 5: Solve for x
    x = 486,367,795,693.61/721,537.76
  6. Step 6: Final answer
    x = 674,071.16

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1.5x scale

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.