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Finding the Fourth Proportional to 819,902.80, 1,229,562.60 and 370,838.80

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Solution

The fourth proportional to 819,902.80, 1,229,562.60 and 370,838.80 is: 556,126.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,902.80 : 1,229,562.60 = 370,838.80 : x
  2. Step 2: Convert to fraction form
    819,902.80/1,229,562.60 = 370,838.80/x
  3. Step 3: Cross multiply
    819,902.80x = 1,229,562.60 × 370,838.80
  4. Step 4: Simplify right side
    819,902.80x = 455,969,519,108.88
  5. Step 5: Solve for x
    x = 455,969,519,108.88/819,902.80
  6. Step 6: Final answer
    x = 556,126.31

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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.