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Finding the Fourth Proportional to 547,118.90, 819,987.15 and 487,675.70

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Solution

The fourth proportional to 547,118.90, 819,987.15 and 487,675.70 is: 730,897.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,118.90 : 819,987.15 = 487,675.70 : x
  2. Step 2: Convert to fraction form
    547,118.90/819,987.15 = 487,675.70/x
  3. Step 3: Cross multiply
    547,118.90x = 819,987.15 × 487,675.70
  4. Step 4: Simplify right side
    547,118.90x = 399,887,807,367.26
  5. Step 5: Solve for x
    x = 399,887,807,367.26/547,118.90
  6. Step 6: Final answer
    x = 730,897.45

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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.