Home / 485,780.44-670,497.20-330,987.76

Finding the Fourth Proportional to 485,780.44, 670,497.20 and 330,987.76

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Solution

The fourth proportional to 485,780.44, 670,497.20 and 330,987.76 is: 456,845.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,780.44 : 670,497.20 = 330,987.76 : x
  2. Step 2: Convert to fraction form
    485,780.44/670,497.20 = 330,987.76/x
  3. Step 3: Cross multiply
    485,780.44x = 670,497.20 × 330,987.76
  4. Step 4: Simplify right side
    485,780.44x = 221,926,366,314.27
  5. Step 5: Solve for x
    x = 221,926,366,314.27/485,780.44
  6. Step 6: Final answer
    x = 456,845.00

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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.