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Finding the Fourth Proportional to 453,981.70, 680,972.55 and 404,992.90

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Solution

The fourth proportional to 453,981.70, 680,972.55 and 404,992.90 is: 607,489.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,981.70 : 680,972.55 = 404,992.90 : x
  2. Step 2: Convert to fraction form
    453,981.70/680,972.55 = 404,992.90/x
  3. Step 3: Cross multiply
    453,981.70x = 680,972.55 × 404,992.90
  4. Step 4: Simplify right side
    453,981.70x = 275,789,047,844.90
  5. Step 5: Solve for x
    x = 275,789,047,844.90/453,981.70
  6. Step 6: Final answer
    x = 607,489.35

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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.