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Finding the Fourth Proportional to 487,068.98, 729,804.78 and 344,216.55

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Solution

The fourth proportional to 487,068.98, 729,804.78 and 344,216.55 is: 515,760.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,068.98 : 729,804.78 = 344,216.55 : x
  2. Step 2: Convert to fraction form
    487,068.98/729,804.78 = 344,216.55/x
  3. Step 3: Cross multiply
    487,068.98x = 729,804.78 × 344,216.55
  4. Step 4: Simplify right side
    487,068.98x = 251,210,883,545.11
  5. Step 5: Solve for x
    x = 251,210,883,545.11/487,068.98
  6. Step 6: Final answer
    x = 515,760.38

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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.