Home / 442,840,023.40-664,260,035.10-212,753,626.60

Finding the Fourth Proportional to 442,840,023.40, 664,260,035.10 and 212,753,626.60

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Solution

The fourth proportional to 442,840,023.40, 664,260,035.10 and 212,753,626.60 is: 319,130,439.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,840,023.40 : 664,260,035.10 = 212,753,626.60 : x
  2. Step 2: Convert to fraction form
    442,840,023.40/664,260,035.10 = 212,753,626.60/x
  3. Step 3: Cross multiply
    442,840,023.40x = 664,260,035.10 × 212,753,626.60
  4. Step 4: Simplify right side
    442,840,023.40x = 141,323,731,472,968,288
  5. Step 5: Solve for x
    x = 141,323,731,472,968,288/442,840,023.40
  6. Step 6: Final answer
    x = 319,130,439.90

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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.