Home / 826,670.27-1,240,083.84-321,270.30

Finding the Fourth Proportional to 826,670.27, 1,240,083.84 and 321,270.30

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Solution

The fourth proportional to 826,670.27, 1,240,083.84 and 321,270.30 is: 481,935.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,670.27 : 1,240,083.84 = 321,270.30 : x
  2. Step 2: Convert to fraction form
    826,670.27/1,240,083.84 = 321,270.30/x
  3. Step 3: Cross multiply
    826,670.27x = 1,240,083.84 × 321,270.30
  4. Step 4: Simplify right side
    826,670.27x = 398,402,108,506.72
  5. Step 5: Solve for x
    x = 398,402,108,506.72/826,670.27
  6. Step 6: Final answer
    x = 481,935.93

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Double scale
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Similar ratio
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1.5x scale

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.