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Finding the Fourth Proportional to 424,477.78, 636,497.56 and 124,919.46

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Solution

The fourth proportional to 424,477.78, 636,497.56 and 124,919.46 is: 187,314.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,477.78 : 636,497.56 = 124,919.46 : x
  2. Step 2: Convert to fraction form
    424,477.78/636,497.56 = 124,919.46/x
  3. Step 3: Cross multiply
    424,477.78x = 636,497.56 × 124,919.46
  4. Step 4: Simplify right side
    424,477.78x = 79,510,931,486.52
  5. Step 5: Solve for x
    x = 79,510,931,486.52/424,477.78
  6. Step 6: Final answer
    x = 187,314.71

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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.