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Finding the Fourth Proportional to 787,730.40, 1,182,470.40 and 488,548.80

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Solution

The fourth proportional to 787,730.40, 1,182,470.40 and 488,548.80 is: 733,365.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,730.40 : 1,182,470.40 = 488,548.80 : x
  2. Step 2: Convert to fraction form
    787,730.40/1,182,470.40 = 488,548.80/x
  3. Step 3: Cross multiply
    787,730.40x = 1,182,470.40 × 488,548.80
  4. Step 4: Simplify right side
    787,730.40x = 577,694,494,955.52
  5. Step 5: Solve for x
    x = 577,694,494,955.52/787,730.40
  6. Step 6: Final answer
    x = 733,365.75

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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.