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Finding the Fourth Proportional to 479,658.68, 719,490.20 and 124,647.56

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Solution

The fourth proportional to 479,658.68, 719,490.20 and 124,647.56 is: 186,971.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,658.68 : 719,490.20 = 124,647.56 : x
  2. Step 2: Convert to fraction form
    479,658.68/719,490.20 = 124,647.56/x
  3. Step 3: Cross multiply
    479,658.68x = 719,490.20 × 124,647.56
  4. Step 4: Simplify right side
    479,658.68x = 89,682,697,873.91
  5. Step 5: Solve for x
    x = 89,682,697,873.91/479,658.68
  6. Step 6: Final answer
    x = 186,971.91

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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.