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Finding the Fourth Proportional to 424,908.47, 637,990.86 and 283,633.94

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Solution

The fourth proportional to 424,908.47, 637,990.86 and 283,633.94 is: 425,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,908.47 : 637,990.86 = 283,633.94 : x
  2. Step 2: Convert to fraction form
    424,908.47/637,990.86 = 283,633.94/x
  3. Step 3: Cross multiply
    424,908.47x = 637,990.86 × 283,633.94
  4. Step 4: Simplify right side
    424,908.47x = 180,955,858,115.83
  5. Step 5: Solve for x
    x = 180,955,858,115.83/424,908.47
  6. Step 6: Final answer
    x = 425,870.21

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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.