Home / 485,315.10-727,308.09-307,946.70

Finding the Fourth Proportional to 485,315.10, 727,308.09 and 307,946.70

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Solution

The fourth proportional to 485,315.10, 727,308.09 and 307,946.70 is: 461,498.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,315.10 : 727,308.09 = 307,946.70 : x
  2. Step 2: Convert to fraction form
    485,315.10/727,308.09 = 307,946.70/x
  3. Step 3: Cross multiply
    485,315.10x = 727,308.09 × 307,946.70
  4. Step 4: Simplify right side
    485,315.10x = 223,972,126,198.80
  5. Step 5: Solve for x
    x = 223,972,126,198.80/485,315.10
  6. Step 6: Final answer
    x = 461,498.37

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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.