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Finding the Fourth Proportional to 424,513.86, 636,881.42 and 124,984.63

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Solution

The fourth proportional to 424,513.86, 636,881.42 and 124,984.63 is: 187,509.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,513.86 : 636,881.42 = 124,984.63 : x
  2. Step 2: Convert to fraction form
    424,513.86/636,881.42 = 124,984.63/x
  3. Step 3: Cross multiply
    424,513.86x = 636,881.42 × 124,984.63
  4. Step 4: Simplify right side
    424,513.86x = 79,600,388,632.57
  5. Step 5: Solve for x
    x = 79,600,388,632.57/424,513.86
  6. Step 6: Final answer
    x = 187,509.52

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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.