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Finding the Fourth Proportional to 721,587.68, 995,896.64 and 415,605.24

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Solution

The fourth proportional to 721,587.68, 995,896.64 and 415,605.24 is: 573,596.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,587.68 : 995,896.64 = 415,605.24 : x
  2. Step 2: Convert to fraction form
    721,587.68/995,896.64 = 415,605.24/x
  3. Step 3: Cross multiply
    721,587.68x = 995,896.64 × 415,605.24
  4. Step 4: Simplify right side
    721,587.68x = 413,899,862,082.39
  5. Step 5: Solve for x
    x = 413,899,862,082.39/721,587.68
  6. Step 6: Final answer
    x = 573,596.08

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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.