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Finding the Fourth Proportional to 424,780.54, 637,089.81 and 125,274.94

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Solution

The fourth proportional to 424,780.54, 637,089.81 and 125,274.94 is: 187,888.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,780.54 : 637,089.81 = 125,274.94 : x
  2. Step 2: Convert to fraction form
    424,780.54/637,089.81 = 125,274.94/x
  3. Step 3: Cross multiply
    424,780.54x = 637,089.81 × 125,274.94
  4. Step 4: Simplify right side
    424,780.54x = 79,811,387,722.36
  5. Step 5: Solve for x
    x = 79,811,387,722.36/424,780.54
  6. Step 6: Final answer
    x = 187,888.52

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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.