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Finding the Fourth Proportional to 922,894.20, 1,385,118.90 and 418,231.80

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Solution

The fourth proportional to 922,894.20, 1,385,118.90 and 418,231.80 is: 627,700.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,894.20 : 1,385,118.90 = 418,231.80 : x
  2. Step 2: Convert to fraction form
    922,894.20/1,385,118.90 = 418,231.80/x
  3. Step 3: Cross multiply
    922,894.20x = 1,385,118.90 × 418,231.80
  4. Step 4: Simplify right side
    922,894.20x = 579,300,770,761.02
  5. Step 5: Solve for x
    x = 579,300,770,761.02/922,894.20
  6. Step 6: Final answer
    x = 627,700.09

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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.