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Finding the Fourth Proportional to 662,897.85, 914,766.60 and 376,411.80

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Solution

The fourth proportional to 662,897.85, 914,766.60 and 376,411.80 is: 519,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,897.85 : 914,766.60 = 376,411.80 : x
  2. Step 2: Convert to fraction form
    662,897.85/914,766.60 = 376,411.80/x
  3. Step 3: Cross multiply
    662,897.85x = 914,766.60 × 376,411.80
  4. Step 4: Simplify right side
    662,897.85x = 344,328,942,485.88
  5. Step 5: Solve for x
    x = 344,328,942,485.88/662,897.85
  6. Step 6: Final answer
    x = 519,429.87

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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.