Home / 285,423,621.60-428,135,432.40-252,545,138.40

Finding the Fourth Proportional to 285,423,621.60, 428,135,432.40 and 252,545,138.40

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Solution

The fourth proportional to 285,423,621.60, 428,135,432.40 and 252,545,138.40 is: 378,817,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,423,621.60 : 428,135,432.40 = 252,545,138.40 : x
  2. Step 2: Convert to fraction form
    285,423,621.60/428,135,432.40 = 252,545,138.40/x
  3. Step 3: Cross multiply
    285,423,621.60x = 428,135,432.40 × 252,545,138.40
  4. Step 4: Simplify right side
    285,423,621.60x = 108,123,522,029,401,840
  5. Step 5: Solve for x
    x = 108,123,522,029,401,840/285,423,621.60
  6. Step 6: Final answer
    x = 378,817,707.60

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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.