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Finding the Fourth Proportional to 545,617.11, 752,989.47 and 330,766.23

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Solution

The fourth proportional to 545,617.11, 752,989.47 and 330,766.23 is: 456,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,617.11 : 752,989.47 = 330,766.23 : x
  2. Step 2: Convert to fraction form
    545,617.11/752,989.47 = 330,766.23/x
  3. Step 3: Cross multiply
    545,617.11x = 752,989.47 × 330,766.23
  4. Step 4: Simplify right side
    545,617.11x = 249,063,488,221.60
  5. Step 5: Solve for x
    x = 249,063,488,221.60/545,617.11
  6. Step 6: Final answer
    x = 456,480.35

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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.