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Finding the Fourth Proportional to 680,754.78, 939,433.68 and 374,824.80

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Solution

The fourth proportional to 680,754.78, 939,433.68 and 374,824.80 is: 517,253.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,754.78 : 939,433.68 = 374,824.80 : x
  2. Step 2: Convert to fraction form
    680,754.78/939,433.68 = 374,824.80/x
  3. Step 3: Cross multiply
    680,754.78x = 939,433.68 × 374,824.80
  4. Step 4: Simplify right side
    680,754.78x = 352,123,041,219.26
  5. Step 5: Solve for x
    x = 352,123,041,219.26/680,754.78
  6. Step 6: Final answer
    x = 517,253.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.