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Finding the Fourth Proportional to 543,973.20, 815,959.80 and 540,036.60

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Solution

The fourth proportional to 543,973.20, 815,959.80 and 540,036.60 is: 810,054.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,973.20 : 815,959.80 = 540,036.60 : x
  2. Step 2: Convert to fraction form
    543,973.20/815,959.80 = 540,036.60/x
  3. Step 3: Cross multiply
    543,973.20x = 815,959.80 × 540,036.60
  4. Step 4: Simplify right side
    543,973.20x = 440,648,156,128.68
  5. Step 5: Solve for x
    x = 440,648,156,128.68/543,973.20
  6. Step 6: Final answer
    x = 810,054.90

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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.