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Finding the Fourth Proportional to 520,272.92, 715,222.31 and 447,407.55

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Solution

The fourth proportional to 520,272.92, 715,222.31 and 447,407.55 is: 615,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,272.92 : 715,222.31 = 447,407.55 : x
  2. Step 2: Convert to fraction form
    520,272.92/715,222.31 = 447,407.55/x
  3. Step 3: Cross multiply
    520,272.92x = 715,222.31 × 447,407.55
  4. Step 4: Simplify right side
    520,272.92x = 319,995,859,185.40
  5. Step 5: Solve for x
    x = 319,995,859,185.40/520,272.92
  6. Step 6: Final answer
    x = 615,053.84

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.