Home / 823,905.40-1,234,302.90-423,182.20

Finding the Fourth Proportional to 823,905.40, 1,234,302.90 and 423,182.20

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Solution

The fourth proportional to 823,905.40, 1,234,302.90 and 423,182.20 is: 633,974.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,905.40 : 1,234,302.90 = 423,182.20 : x
  2. Step 2: Convert to fraction form
    823,905.40/1,234,302.90 = 423,182.20/x
  3. Step 3: Cross multiply
    823,905.40x = 1,234,302.90 × 423,182.20
  4. Step 4: Simplify right side
    823,905.40x = 522,335,016,688.38
  5. Step 5: Solve for x
    x = 522,335,016,688.38/823,905.40
  6. Step 6: Final answer
    x = 633,974.50

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Half scale
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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.