Home / 879,474.17-1,213,694.90-492,279.95

Finding the Fourth Proportional to 879,474.17, 1,213,694.90 and 492,279.95

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Solution

The fourth proportional to 879,474.17, 1,213,694.90 and 492,279.95 is: 679,357.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,474.17 : 1,213,694.90 = 492,279.95 : x
  2. Step 2: Convert to fraction form
    879,474.17/1,213,694.90 = 492,279.95/x
  3. Step 3: Cross multiply
    879,474.17x = 1,213,694.90 × 492,279.95
  4. Step 4: Simplify right side
    879,474.17x = 597,477,664,687.26
  5. Step 5: Solve for x
    x = 597,477,664,687.26/879,474.17
  6. Step 6: Final answer
    x = 679,357.83

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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.