Home / 858,458.72-1,286,813.28-385,016.96

Finding the Fourth Proportional to 858,458.72, 1,286,813.28 and 385,016.96

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Solution

The fourth proportional to 858,458.72, 1,286,813.28 and 385,016.96 is: 577,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,458.72 : 1,286,813.28 = 385,016.96 : x
  2. Step 2: Convert to fraction form
    858,458.72/1,286,813.28 = 385,016.96/x
  3. Step 3: Cross multiply
    858,458.72x = 1,286,813.28 × 385,016.96
  4. Step 4: Simplify right side
    858,458.72x = 495,444,937,153.23
  5. Step 5: Solve for x
    x = 495,444,937,153.23/858,458.72
  6. Step 6: Final answer
    x = 577,133.09

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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.