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Finding the Fourth Proportional to 545,332.88, 816,781.19 and 395,228.59

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Solution

The fourth proportional to 545,332.88, 816,781.19 and 395,228.59 is: 591,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,332.88 : 816,781.19 = 395,228.59 : x
  2. Step 2: Convert to fraction form
    545,332.88/816,781.19 = 395,228.59/x
  3. Step 3: Cross multiply
    545,332.88x = 816,781.19 × 395,228.59
  4. Step 4: Simplify right side
    545,332.88x = 322,815,274,044.13
  5. Step 5: Solve for x
    x = 322,815,274,044.13/545,332.88
  6. Step 6: Final answer
    x = 591,960.04

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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.