Home / 485,964.74-670,548.27-281,968.90

Finding the Fourth Proportional to 485,964.74, 670,548.27 and 281,968.90

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Solution

The fourth proportional to 485,964.74, 670,548.27 and 281,968.90 is: 389,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,964.74 : 670,548.27 = 281,968.90 : x
  2. Step 2: Convert to fraction form
    485,964.74/670,548.27 = 281,968.90/x
  3. Step 3: Cross multiply
    485,964.74x = 670,548.27 × 281,968.90
  4. Step 4: Simplify right side
    485,964.74x = 189,073,758,088.80
  5. Step 5: Solve for x
    x = 189,073,758,088.80/485,964.74
  6. Step 6: Final answer
    x = 389,068.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.