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Finding the Fourth Proportional to 659,323.60, 987,673.20 and 359,267.20

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Solution

The fourth proportional to 659,323.60, 987,673.20 and 359,267.20 is: 538,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,323.60 : 987,673.20 = 359,267.20 : x
  2. Step 2: Convert to fraction form
    659,323.60/987,673.20 = 359,267.20/x
  3. Step 3: Cross multiply
    659,323.60x = 987,673.20 × 359,267.20
  4. Step 4: Simplify right side
    659,323.60x = 354,838,585,079.04
  5. Step 5: Solve for x
    x = 354,838,585,079.04/659,323.60
  6. Step 6: Final answer
    x = 538,185.78

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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.