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Finding the Fourth Proportional to 1,974,480.72, 2,961,711.36 and 478,572.72

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Solution

The fourth proportional to 1,974,480.72, 2,961,711.36 and 478,572.72 is: 717,856.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974,480.72 : 2,961,711.36 = 478,572.72 : x
  2. Step 2: Convert to fraction form
    1,974,480.72/2,961,711.36 = 478,572.72/x
  3. Step 3: Cross multiply
    1,974,480.72x = 2,961,711.36 × 478,572.72
  4. Step 4: Simplify right side
    1,974,480.72x = 1,417,394,261,410.10
  5. Step 5: Solve for x
    x = 1,417,394,261,410.10/1,974,480.72
  6. Step 6: Final answer
    x = 717,856.72

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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.