Home / 915,927.20-1,373,890.80-418,263.20

Finding the Fourth Proportional to 915,927.20, 1,373,890.80 and 418,263.20

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Solution

The fourth proportional to 915,927.20, 1,373,890.80 and 418,263.20 is: 627,394.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,927.20 : 1,373,890.80 = 418,263.20 : x
  2. Step 2: Convert to fraction form
    915,927.20/1,373,890.80 = 418,263.20/x
  3. Step 3: Cross multiply
    915,927.20x = 1,373,890.80 × 418,263.20
  4. Step 4: Simplify right side
    915,927.20x = 574,647,962,458.56
  5. Step 5: Solve for x
    x = 574,647,962,458.56/915,927.20
  6. Step 6: Final answer
    x = 627,394.80

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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.