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Finding the Fourth Proportional to 391,216,500.60, 586,824,750.90 and 276,425,244.60

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Solution

The fourth proportional to 391,216,500.60, 586,824,750.90 and 276,425,244.60 is: 414,637,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,216,500.60 : 586,824,750.90 = 276,425,244.60 : x
  2. Step 2: Convert to fraction form
    391,216,500.60/586,824,750.90 = 276,425,244.60/x
  3. Step 3: Cross multiply
    391,216,500.60x = 586,824,750.90 × 276,425,244.60
  4. Step 4: Simplify right side
    391,216,500.60x = 162,213,175,304,866,592
  5. Step 5: Solve for x
    x = 162,213,175,304,866,592/391,216,500.60
  6. Step 6: Final answer
    x = 414,637,866.90

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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.