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Finding the Fourth Proportional to 424,476.78, 636,496.07 and 124,918.46

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Solution

The fourth proportional to 424,476.78, 636,496.07 and 124,918.46 is: 187,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,476.78 : 636,496.07 = 124,918.46 : x
  2. Step 2: Convert to fraction form
    424,476.78/636,496.07 = 124,918.46/x
  3. Step 3: Cross multiply
    424,476.78x = 636,496.07 × 124,918.46
  4. Step 4: Simplify right side
    424,476.78x = 79,510,109,827.10
  5. Step 5: Solve for x
    x = 79,510,109,827.10/424,476.78
  6. Step 6: Final answer
    x = 187,313.21

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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.