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Finding the Fourth Proportional to 658,286.90, 987,430.35 and 606,965.30

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Solution

The fourth proportional to 658,286.90, 987,430.35 and 606,965.30 is: 910,447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,286.90 : 987,430.35 = 606,965.30 : x
  2. Step 2: Convert to fraction form
    658,286.90/987,430.35 = 606,965.30/x
  3. Step 3: Cross multiply
    658,286.90x = 987,430.35 × 606,965.30
  4. Step 4: Simplify right side
    658,286.90x = 599,335,958,616.86
  5. Step 5: Solve for x
    x = 599,335,958,616.86/658,286.90
  6. Step 6: Final answer
    x = 910,447.95

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.