Home / 442,621.30-662,947.80-342,456.70

Finding the Fourth Proportional to 442,621.30, 662,947.80 and 342,456.70

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Solution

The fourth proportional to 442,621.30, 662,947.80 and 342,456.70 is: 512,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,621.30 : 662,947.80 = 342,456.70 : x
  2. Step 2: Convert to fraction form
    442,621.30/662,947.80 = 342,456.70/x
  3. Step 3: Cross multiply
    442,621.30x = 662,947.80 × 342,456.70
  4. Step 4: Simplify right side
    442,621.30x = 227,030,915,860.26
  5. Step 5: Solve for x
    x = 227,030,915,860.26/442,621.30
  6. Step 6: Final answer
    x = 512,923.61

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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.