Home / 840,153.70-1,260,230.55-479,954.80

Finding the Fourth Proportional to 840,153.70, 1,260,230.55 and 479,954.80

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Solution

The fourth proportional to 840,153.70, 1,260,230.55 and 479,954.80 is: 719,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,153.70 : 1,260,230.55 = 479,954.80 : x
  2. Step 2: Convert to fraction form
    840,153.70/1,260,230.55 = 479,954.80/x
  3. Step 3: Cross multiply
    840,153.70x = 1,260,230.55 × 479,954.80
  4. Step 4: Simplify right side
    840,153.70x = 604,853,701,579.14
  5. Step 5: Solve for x
    x = 604,853,701,579.14/840,153.70
  6. Step 6: Final answer
    x = 719,932.20

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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.