Home / 402,436,080.80-603,654,121.20-321,814,512.80

Finding the Fourth Proportional to 402,436,080.80, 603,654,121.20 and 321,814,512.80

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Solution

The fourth proportional to 402,436,080.80, 603,654,121.20 and 321,814,512.80 is: 482,721,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,436,080.80 : 603,654,121.20 = 321,814,512.80 : x
  2. Step 2: Convert to fraction form
    402,436,080.80/603,654,121.20 = 321,814,512.80/x
  3. Step 3: Cross multiply
    402,436,080.80x = 603,654,121.20 × 321,814,512.80
  4. Step 4: Simplify right side
    402,436,080.80x = 194,264,656,913,690,176
  5. Step 5: Solve for x
    x = 194,264,656,913,690,176/402,436,080.80
  6. Step 6: Final answer
    x = 482,721,769.20

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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.