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Finding the Fourth Proportional to 484,617.60, 668,711.70 and 280,665.27

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Solution

The fourth proportional to 484,617.60, 668,711.70 and 280,665.27 is: 387,282.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,617.60 : 668,711.70 = 280,665.27 : x
  2. Step 2: Convert to fraction form
    484,617.60/668,711.70 = 280,665.27/x
  3. Step 3: Cross multiply
    484,617.60x = 668,711.70 × 280,665.27
  4. Step 4: Simplify right side
    484,617.60x = 187,684,149,832.66
  5. Step 5: Solve for x
    x = 187,684,149,832.66/484,617.60
  6. Step 6: Final answer
    x = 387,282.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.