Home / 858,449.72-1,286,799.78-385,007.96

Finding the Fourth Proportional to 858,449.72, 1,286,799.78 and 385,007.96

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Solution

The fourth proportional to 858,449.72, 1,286,799.78 and 385,007.96 is: 577,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,449.72 : 1,286,799.78 = 385,007.96 : x
  2. Step 2: Convert to fraction form
    858,449.72/1,286,799.78 = 385,007.96/x
  3. Step 3: Cross multiply
    858,449.72x = 1,286,799.78 × 385,007.96
  4. Step 4: Simplify right side
    858,449.72x = 495,428,158,226.25
  5. Step 5: Solve for x
    x = 495,428,158,226.25/858,449.72
  6. Step 6: Final answer
    x = 577,119.60

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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.