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Finding the Fourth Proportional to 607,002.90, 911,055.15 and 307,691.70

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Solution

The fourth proportional to 607,002.90, 911,055.15 and 307,691.70 is: 461,816.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,002.90 : 911,055.15 = 307,691.70 : x
  2. Step 2: Convert to fraction form
    607,002.90/911,055.15 = 307,691.70/x
  3. Step 3: Cross multiply
    607,002.90x = 911,055.15 × 307,691.70
  4. Step 4: Simplify right side
    607,002.90x = 280,324,107,897.26
  5. Step 5: Solve for x
    x = 280,324,107,897.26/607,002.90
  6. Step 6: Final answer
    x = 461,816.75

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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.