Home / 687,020.94-1,029,644.46-307,663.92

Finding the Fourth Proportional to 687,020.94, 1,029,644.46 and 307,663.92

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Solution

The fourth proportional to 687,020.94, 1,029,644.46 and 307,663.92 is: 461,098.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,020.94 : 1,029,644.46 = 307,663.92 : x
  2. Step 2: Convert to fraction form
    687,020.94/1,029,644.46 = 307,663.92/x
  3. Step 3: Cross multiply
    687,020.94x = 1,029,644.46 × 307,663.92
  4. Step 4: Simplify right side
    687,020.94x = 316,784,450,769.88
  5. Step 5: Solve for x
    x = 316,784,450,769.88/687,020.94
  6. Step 6: Final answer
    x = 461,098.68

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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.