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Finding the Fourth Proportional to 663,706.77, 915,994.02 and 377,269.92

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Solution

The fourth proportional to 663,706.77, 915,994.02 and 377,269.92 is: 520,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,706.77 : 915,994.02 = 377,269.92 : x
  2. Step 2: Convert to fraction form
    663,706.77/915,994.02 = 377,269.92/x
  3. Step 3: Cross multiply
    663,706.77x = 915,994.02 × 377,269.92
  4. Step 4: Simplify right side
    663,706.77x = 345,576,990,645.88
  5. Step 5: Solve for x
    x = 345,576,990,645.88/663,706.77
  6. Step 6: Final answer
    x = 520,677.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.