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Finding the Fourth Proportional to 644,367.54, 966,180.90 and 265,549.80

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Solution

The fourth proportional to 644,367.54, 966,180.90 and 265,549.80 is: 398,172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,367.54 : 966,180.90 = 265,549.80 : x
  2. Step 2: Convert to fraction form
    644,367.54/966,180.90 = 265,549.80/x
  3. Step 3: Cross multiply
    644,367.54x = 966,180.90 × 265,549.80
  4. Step 4: Simplify right side
    644,367.54x = 256,569,144,758.82
  5. Step 5: Solve for x
    x = 256,569,144,758.82/644,367.54
  6. Step 6: Final answer
    x = 398,172.05

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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.