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Finding the Fourth Proportional to 434,534.20, 651,801.30 and 392,543.80

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Solution

The fourth proportional to 434,534.20, 651,801.30 and 392,543.80 is: 588,815.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,534.20 : 651,801.30 = 392,543.80 : x
  2. Step 2: Convert to fraction form
    434,534.20/651,801.30 = 392,543.80/x
  3. Step 3: Cross multiply
    434,534.20x = 651,801.30 × 392,543.80
  4. Step 4: Simplify right side
    434,534.20x = 255,860,559,146.94
  5. Step 5: Solve for x
    x = 255,860,559,146.94/434,534.20
  6. Step 6: Final answer
    x = 588,815.70

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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.