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Finding the Fourth Proportional to 590,601.90, 885,902.85 and 485,625.90

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Solution

The fourth proportional to 590,601.90, 885,902.85 and 485,625.90 is: 728,438.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,601.90 : 885,902.85 = 485,625.90 : x
  2. Step 2: Convert to fraction form
    590,601.90/885,902.85 = 485,625.90/x
  3. Step 3: Cross multiply
    590,601.90x = 885,902.85 × 485,625.90
  4. Step 4: Simplify right side
    590,601.90x = 430,217,368,843.82
  5. Step 5: Solve for x
    x = 430,217,368,843.82/590,601.90
  6. Step 6: Final answer
    x = 728,438.85

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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.