Home / 858,453.94-1,287,383.46-431,824.87

Finding the Fourth Proportional to 858,453.94, 1,287,383.46 and 431,824.87

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Solution

The fourth proportional to 858,453.94, 1,287,383.46 and 431,824.87 is: 647,587.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,453.94 : 1,287,383.46 = 431,824.87 : x
  2. Step 2: Convert to fraction form
    858,453.94/1,287,383.46 = 431,824.87/x
  3. Step 3: Cross multiply
    858,453.94x = 1,287,383.46 × 431,824.87
  4. Step 4: Simplify right side
    858,453.94x = 555,924,195,254.65
  5. Step 5: Solve for x
    x = 555,924,195,254.65/858,453.94
  6. Step 6: Final answer
    x = 647,587.68

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1.5x scale

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.