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Finding the Fourth Proportional to 715,462.32, 986,752.08 and 443,341.20

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Solution

The fourth proportional to 715,462.32, 986,752.08 and 443,341.20 is: 611,447.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,462.32 : 986,752.08 = 443,341.20 : x
  2. Step 2: Convert to fraction form
    715,462.32/986,752.08 = 443,341.20/x
  3. Step 3: Cross multiply
    715,462.32x = 986,752.08 × 443,341.20
  4. Step 4: Simplify right side
    715,462.32x = 437,467,851,249.70
  5. Step 5: Solve for x
    x = 437,467,851,249.70/715,462.32
  6. Step 6: Final answer
    x = 611,447.79

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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.