Home / 485,640.90-670,152.96-270,768.42

Finding the Fourth Proportional to 485,640.90, 670,152.96 and 270,768.42

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Solution

The fourth proportional to 485,640.90, 670,152.96 and 270,768.42 is: 373,642.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,640.90 : 670,152.96 = 270,768.42 : x
  2. Step 2: Convert to fraction form
    485,640.90/670,152.96 = 270,768.42/x
  3. Step 3: Cross multiply
    485,640.90x = 670,152.96 × 270,768.42
  4. Step 4: Simplify right side
    485,640.90x = 181,456,258,137.52
  5. Step 5: Solve for x
    x = 181,456,258,137.52/485,640.90
  6. Step 6: Final answer
    x = 373,642.87

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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.