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Finding the Fourth Proportional to 721,535.75, 995,651.51 and 488,488.60

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Solution

The fourth proportional to 721,535.75, 995,651.51 and 488,488.60 is: 674,068.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,535.75 : 995,651.51 = 488,488.60 : x
  2. Step 2: Convert to fraction form
    721,535.75/995,651.51 = 488,488.60/x
  3. Step 3: Cross multiply
    721,535.75x = 995,651.51 × 488,488.60
  4. Step 4: Simplify right side
    721,535.75x = 486,364,418,288.42
  5. Step 5: Solve for x
    x = 486,364,418,288.42/721,535.75
  6. Step 6: Final answer
    x = 674,068.36

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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.