Home / 285,423,617.10-428,135,425.65-252,545,133.90

Finding the Fourth Proportional to 285,423,617.10, 428,135,425.65 and 252,545,133.90

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Solution

The fourth proportional to 285,423,617.10, 428,135,425.65 and 252,545,133.90 is: 378,817,700.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,423,617.10 : 428,135,425.65 = 252,545,133.90 : x
  2. Step 2: Convert to fraction form
    285,423,617.10/428,135,425.65 = 252,545,133.90/x
  3. Step 3: Cross multiply
    285,423,617.10x = 428,135,425.65 × 252,545,133.90
  4. Step 4: Simplify right side
    285,423,617.10x = 108,123,518,398,112,736
  5. Step 5: Solve for x
    x = 108,123,518,398,112,736/285,423,617.10
  6. Step 6: Final answer
    x = 378,817,700.85

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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.