Home / 1,272,840.72-1,909,226.88-313,304.88

Finding the Fourth Proportional to 1,272,840.72, 1,909,226.88 and 313,304.88

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Solution

The fourth proportional to 1,272,840.72, 1,909,226.88 and 313,304.88 is: 469,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,840.72 : 1,909,226.88 = 313,304.88 : x
  2. Step 2: Convert to fraction form
    1,272,840.72/1,909,226.88 = 313,304.88/x
  3. Step 3: Cross multiply
    1,272,840.72x = 1,909,226.88 × 313,304.88
  4. Step 4: Simplify right side
    1,272,840.72x = 598,170,098,531.17
  5. Step 5: Solve for x
    x = 598,170,098,531.17/1,272,840.72
  6. Step 6: Final answer
    x = 469,948.90

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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.