Home / 391,175,410.80-586,763,116.20-385,128,793.20

Finding the Fourth Proportional to 391,175,410.80, 586,763,116.20 and 385,128,793.20

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Solution

The fourth proportional to 391,175,410.80, 586,763,116.20 and 385,128,793.20 is: 577,693,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,175,410.80 : 586,763,116.20 = 385,128,793.20 : x
  2. Step 2: Convert to fraction form
    391,175,410.80/586,763,116.20 = 385,128,793.20/x
  3. Step 3: Cross multiply
    391,175,410.80x = 586,763,116.20 × 385,128,793.20
  4. Step 4: Simplify right side
    391,175,410.80x = 225,979,370,836,377,376
  5. Step 5: Solve for x
    x = 225,979,370,836,377,376/391,175,410.80
  6. Step 6: Final answer
    x = 577,693,189.80

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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.