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Finding the Fourth Proportional to 659,703.90, 989,555.85 and 327,927.90

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Solution

The fourth proportional to 659,703.90, 989,555.85 and 327,927.90 is: 491,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,703.90 : 989,555.85 = 327,927.90 : x
  2. Step 2: Convert to fraction form
    659,703.90/989,555.85 = 327,927.90/x
  3. Step 3: Cross multiply
    659,703.90x = 989,555.85 × 327,927.90
  4. Step 4: Simplify right side
    659,703.90x = 324,502,971,823.22
  5. Step 5: Solve for x
    x = 324,502,971,823.22/659,703.90
  6. Step 6: Final answer
    x = 491,891.85

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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.