Home / 1,277,438.20-1,916,082.07-478,652.87

Finding the Fourth Proportional to 1,277,438.20, 1,916,082.07 and 478,652.87

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Solution

The fourth proportional to 1,277,438.20, 1,916,082.07 and 478,652.87 is: 717,951.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,438.20 : 1,916,082.07 = 478,652.87 : x
  2. Step 2: Convert to fraction form
    1,277,438.20/1,916,082.07 = 478,652.87/x
  3. Step 3: Cross multiply
    1,277,438.20x = 1,916,082.07 × 478,652.87
  4. Step 4: Simplify right side
    1,277,438.20x = 917,138,181,961.04
  5. Step 5: Solve for x
    x = 917,138,181,961.04/1,277,438.20
  6. Step 6: Final answer
    x = 717,951.12

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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.