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Finding the Fourth Proportional to 665,443.70, 998,165.55 and 488,296.70

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Solution

The fourth proportional to 665,443.70, 998,165.55 and 488,296.70 is: 732,445.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,443.70 : 998,165.55 = 488,296.70 : x
  2. Step 2: Convert to fraction form
    665,443.70/998,165.55 = 488,296.70/x
  3. Step 3: Cross multiply
    665,443.70x = 998,165.55 × 488,296.70
  4. Step 4: Simplify right side
    665,443.70x = 487,400,944,118.69
  5. Step 5: Solve for x
    x = 487,400,944,118.69/665,443.70
  6. Step 6: Final answer
    x = 732,445.05

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Similar ratio
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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.