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Finding the Fourth Proportional to 576,369.28, 862,782.40 and 491,338.72

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Solution

The fourth proportional to 576,369.28, 862,782.40 and 491,338.72 is: 735,497.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,369.28 : 862,782.40 = 491,338.72 : x
  2. Step 2: Convert to fraction form
    576,369.28/862,782.40 = 491,338.72/x
  3. Step 3: Cross multiply
    576,369.28x = 862,782.40 × 491,338.72
  4. Step 4: Simplify right side
    576,369.28x = 423,918,400,054.53
  5. Step 5: Solve for x
    x = 423,918,400,054.53/576,369.28
  6. Step 6: Final answer
    x = 735,497.91

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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.