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Finding the Fourth Proportional to 715,859.25, 987,074.15 and 457,394.73

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Solution

The fourth proportional to 715,859.25, 987,074.15 and 457,394.73 is: 630,686.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,859.25 : 987,074.15 = 457,394.73 : x
  2. Step 2: Convert to fraction form
    715,859.25/987,074.15 = 457,394.73/x
  3. Step 3: Cross multiply
    715,859.25x = 987,074.15 × 457,394.73
  4. Step 4: Simplify right side
    715,859.25x = 451,482,512,042.26
  5. Step 5: Solve for x
    x = 451,482,512,042.26/715,859.25
  6. Step 6: Final answer
    x = 630,686.15

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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.