Home / 485,705.60-670,274.36-267,909.38

Finding the Fourth Proportional to 485,705.60, 670,274.36 and 267,909.38

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Solution

The fourth proportional to 485,705.60, 670,274.36 and 267,909.38 is: 369,715.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,705.60 : 670,274.36 = 267,909.38 : x
  2. Step 2: Convert to fraction form
    485,705.60/670,274.36 = 267,909.38/x
  3. Step 3: Cross multiply
    485,705.60x = 670,274.36 × 267,909.38
  4. Step 4: Simplify right side
    485,705.60x = 179,572,788,217.50
  5. Step 5: Solve for x
    x = 179,572,788,217.50/485,705.60
  6. Step 6: Final answer
    x = 369,715.29

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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.