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Finding the Fourth Proportional to 715,467.32, 986,758.98 and 443,346.20

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Solution

The fourth proportional to 715,467.32, 986,758.98 and 443,346.20 is: 611,454.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,467.32 : 986,758.98 = 443,346.20 : x
  2. Step 2: Convert to fraction form
    715,467.32/986,758.98 = 443,346.20/x
  3. Step 3: Cross multiply
    715,467.32x = 986,758.98 × 443,346.20
  4. Step 4: Simplify right side
    715,467.32x = 437,475,844,098.88
  5. Step 5: Solve for x
    x = 437,475,844,098.88/715,467.32
  6. Step 6: Final answer
    x = 611,454.68

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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.