Home / 508,914.80-763,372.20-256,972.40

Finding the Fourth Proportional to 508,914.80, 763,372.20 and 256,972.40

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Solution

The fourth proportional to 508,914.80, 763,372.20 and 256,972.40 is: 385,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,914.80 : 763,372.20 = 256,972.40 : x
  2. Step 2: Convert to fraction form
    508,914.80/763,372.20 = 256,972.40/x
  3. Step 3: Cross multiply
    508,914.80x = 763,372.20 × 256,972.40
  4. Step 4: Simplify right side
    508,914.80x = 196,165,586,327.28
  5. Step 5: Solve for x
    x = 196,165,586,327.28/508,914.80
  6. Step 6: Final answer
    x = 385,458.60

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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.