Home / 812,043.43-1,120,584.65-449,445.65

Finding the Fourth Proportional to 812,043.43, 1,120,584.65 and 449,445.65

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Solution

The fourth proportional to 812,043.43, 1,120,584.65 and 449,445.65 is: 620,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,043.43 : 1,120,584.65 = 449,445.65 : x
  2. Step 2: Convert to fraction form
    812,043.43/1,120,584.65 = 449,445.65/x
  3. Step 3: Cross multiply
    812,043.43x = 1,120,584.65 × 449,445.65
  4. Step 4: Simplify right side
    812,043.43x = 503,641,888,549.12
  5. Step 5: Solve for x
    x = 503,641,888,549.12/812,043.43
  6. Step 6: Final answer
    x = 620,215.46

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Double scale
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1.5x scale

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.