Home / 391,144,775.20-586,717,271.52-145,469,310.64

Finding the Fourth Proportional to 391,144,775.20, 586,717,271.52 and 145,469,310.64

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Solution

The fourth proportional to 391,144,775.20, 586,717,271.52 and 145,469,310.64 is: 218,204,006.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,144,775.20 : 586,717,271.52 = 145,469,310.64 : x
  2. Step 2: Convert to fraction form
    391,144,775.20/586,717,271.52 = 145,469,310.64/x
  3. Step 3: Cross multiply
    391,144,775.20x = 586,717,271.52 × 145,469,310.64
  4. Step 4: Simplify right side
    391,144,775.20x = 85,349,357,028,596,096
  5. Step 5: Solve for x
    x = 85,349,357,028,596,096/391,144,775.20
  6. Step 6: Final answer
    x = 218,204,006.39

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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.