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Finding the Fourth Proportional to 664,917.70, 998,002.95 and 349,600.90

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Solution

The fourth proportional to 664,917.70, 998,002.95 and 349,600.90 is: 524,730.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,917.70 : 998,002.95 = 349,600.90 : x
  2. Step 2: Convert to fraction form
    664,917.70/998,002.95 = 349,600.90/x
  3. Step 3: Cross multiply
    664,917.70x = 998,002.95 × 349,600.90
  4. Step 4: Simplify right side
    664,917.70x = 348,902,729,522.66
  5. Step 5: Solve for x
    x = 348,902,729,522.66/664,917.70
  6. Step 6: Final answer
    x = 524,730.70

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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.