Home / 762,344.78-1,143,225.54-256,769.72

Finding the Fourth Proportional to 762,344.78, 1,143,225.54 and 256,769.72

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Solution

The fourth proportional to 762,344.78, 1,143,225.54 and 256,769.72 is: 385,056.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,344.78 : 1,143,225.54 = 256,769.72 : x
  2. Step 2: Convert to fraction form
    762,344.78/1,143,225.54 = 256,769.72/x
  3. Step 3: Cross multiply
    762,344.78x = 1,143,225.54 × 256,769.72
  4. Step 4: Simplify right side
    762,344.78x = 293,545,701,802.65
  5. Step 5: Solve for x
    x = 293,545,701,802.65/762,344.78
  6. Step 6: Final answer
    x = 385,056.35

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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.