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Finding the Fourth Proportional to 652,119.70, 978,179.55 and 403,287.70

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Solution

The fourth proportional to 652,119.70, 978,179.55 and 403,287.70 is: 604,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,119.70 : 978,179.55 = 403,287.70 : x
  2. Step 2: Convert to fraction form
    652,119.70/978,179.55 = 403,287.70/x
  3. Step 3: Cross multiply
    652,119.70x = 978,179.55 × 403,287.70
  4. Step 4: Simplify right side
    652,119.70x = 394,487,780,906.54
  5. Step 5: Solve for x
    x = 394,487,780,906.54/652,119.70
  6. Step 6: Final answer
    x = 604,931.55

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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.