Home / 721,278.41-995,277.47-415,454.25

Finding the Fourth Proportional to 721,278.41, 995,277.47 and 415,454.25

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Solution

The fourth proportional to 721,278.41, 995,277.47 and 415,454.25 is: 573,276.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,278.41 : 995,277.47 = 415,454.25 : x
  2. Step 2: Convert to fraction form
    721,278.41/995,277.47 = 415,454.25/x
  3. Step 3: Cross multiply
    721,278.41x = 995,277.47 × 415,454.25
  4. Step 4: Simplify right side
    721,278.41x = 413,492,254,840.75
  5. Step 5: Solve for x
    x = 413,492,254,840.75/721,278.41
  6. Step 6: Final answer
    x = 573,276.91

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Double scale
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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.