Home / 485,976.13-670,647.35-271,116.20

Finding the Fourth Proportional to 485,976.13, 670,647.35 and 271,116.20

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Solution

The fourth proportional to 485,976.13, 670,647.35 and 271,116.20 is: 374,140.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,976.13 : 670,647.35 = 271,116.20 : x
  2. Step 2: Convert to fraction form
    485,976.13/670,647.35 = 271,116.20/x
  3. Step 3: Cross multiply
    485,976.13x = 670,647.35 × 271,116.20
  4. Step 4: Simplify right side
    485,976.13x = 181,823,361,072.07
  5. Step 5: Solve for x
    x = 181,823,361,072.07/485,976.13
  6. Step 6: Final answer
    x = 374,140.52

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1.5x scale

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.