Home / 762,515.94-1,142,975.79-256,902.21

Finding the Fourth Proportional to 762,515.94, 1,142,975.79 and 256,902.21

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Solution

The fourth proportional to 762,515.94, 1,142,975.79 and 256,902.21 is: 385,084.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,515.94 : 1,142,975.79 = 256,902.21 : x
  2. Step 2: Convert to fraction form
    762,515.94/1,142,975.79 = 256,902.21/x
  3. Step 3: Cross multiply
    762,515.94x = 1,142,975.79 × 256,902.21
  4. Step 4: Simplify right side
    762,515.94x = 293,633,006,427.50
  5. Step 5: Solve for x
    x = 293,633,006,427.50/762,515.94
  6. Step 6: Final answer
    x = 385,084.42

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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.