Home / 890,287.40-1,335,431.10-329,205.80

Finding the Fourth Proportional to 890,287.40, 1,335,431.10 and 329,205.80

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Solution

The fourth proportional to 890,287.40, 1,335,431.10 and 329,205.80 is: 493,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,287.40 : 1,335,431.10 = 329,205.80 : x
  2. Step 2: Convert to fraction form
    890,287.40/1,335,431.10 = 329,205.80/x
  3. Step 3: Cross multiply
    890,287.40x = 1,335,431.10 × 329,205.80
  4. Step 4: Simplify right side
    890,287.40x = 439,631,663,620.38
  5. Step 5: Solve for x
    x = 439,631,663,620.38/890,287.40
  6. Step 6: Final answer
    x = 493,808.70

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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.