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Finding the Fourth Proportional to 487,067.98, 729,803.28 and 344,215.55

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Solution

The fourth proportional to 487,067.98, 729,803.28 and 344,215.55 is: 515,758.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,067.98 : 729,803.28 = 344,215.55 : x
  2. Step 2: Convert to fraction form
    487,067.98/729,803.28 = 344,215.55/x
  3. Step 3: Cross multiply
    487,067.98x = 729,803.28 × 344,215.55
  4. Step 4: Simplify right side
    487,067.98x = 251,209,637,417.00
  5. Step 5: Solve for x
    x = 251,209,637,417.00/487,067.98
  6. Step 6: Final answer
    x = 515,758.88

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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.