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Finding the Fourth Proportional to 448,088.46, 670,553.19 and 279,687.84

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Solution

The fourth proportional to 448,088.46, 670,553.19 and 279,687.84 is: 418,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,088.46 : 670,553.19 = 279,687.84 : x
  2. Step 2: Convert to fraction form
    448,088.46/670,553.19 = 279,687.84/x
  3. Step 3: Cross multiply
    448,088.46x = 670,553.19 × 279,687.84
  4. Step 4: Simplify right side
    448,088.46x = 187,545,573,316.21
  5. Step 5: Solve for x
    x = 187,545,573,316.21/448,088.46
  6. Step 6: Final answer
    x = 418,545.87

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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.