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Finding the Fourth Proportional to 715,575.60, 987,587.64 and 461,665.44

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Solution

The fourth proportional to 715,575.60, 987,587.64 and 461,665.44 is: 637,158.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,575.60 : 987,587.64 = 461,665.44 : x
  2. Step 2: Convert to fraction form
    715,575.60/987,587.64 = 461,665.44/x
  3. Step 3: Cross multiply
    715,575.60x = 987,587.64 × 461,665.44
  4. Step 4: Simplify right side
    715,575.60x = 455,935,082,359.16
  5. Step 5: Solve for x
    x = 455,935,082,359.16/715,575.60
  6. Step 6: Final answer
    x = 637,158.51

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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.