Home / 442,905,721.20-664,355,082.60-115,380,601.20

Finding the Fourth Proportional to 442,905,721.20, 664,355,082.60 and 115,380,601.20

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Solution

The fourth proportional to 442,905,721.20, 664,355,082.60 and 115,380,601.20 is: 173,069,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,905,721.20 : 664,355,082.60 = 115,380,601.20 : x
  2. Step 2: Convert to fraction form
    442,905,721.20/664,355,082.60 = 115,380,601.20/x
  3. Step 3: Cross multiply
    442,905,721.20x = 664,355,082.60 × 115,380,601.20
  4. Step 4: Simplify right side
    442,905,721.20x = 76,653,688,840,663,664
  5. Step 5: Solve for x
    x = 76,653,688,840,663,664/442,905,721.20
  6. Step 6: Final answer
    x = 173,069,990.23

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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.