Home / 690,856.70-1,036,285.05-241,428.20

Finding the Fourth Proportional to 690,856.70, 1,036,285.05 and 241,428.20

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Solution

The fourth proportional to 690,856.70, 1,036,285.05 and 241,428.20 is: 362,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,856.70 : 1,036,285.05 = 241,428.20 : x
  2. Step 2: Convert to fraction form
    690,856.70/1,036,285.05 = 241,428.20/x
  3. Step 3: Cross multiply
    690,856.70x = 1,036,285.05 × 241,428.20
  4. Step 4: Simplify right side
    690,856.70x = 250,188,434,308.41
  5. Step 5: Solve for x
    x = 250,188,434,308.41/690,856.70
  6. Step 6: Final answer
    x = 362,142.30

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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.