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Finding the Fourth Proportional to 515,133.90, 772,700.85 and 488,889.90

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Solution

The fourth proportional to 515,133.90, 772,700.85 and 488,889.90 is: 733,334.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,133.90 : 772,700.85 = 488,889.90 : x
  2. Step 2: Convert to fraction form
    515,133.90/772,700.85 = 488,889.90/x
  3. Step 3: Cross multiply
    515,133.90x = 772,700.85 × 488,889.90
  4. Step 4: Simplify right side
    515,133.90x = 377,765,641,286.42
  5. Step 5: Solve for x
    x = 377,765,641,286.42/515,133.90
  6. Step 6: Final answer
    x = 733,334.85

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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.