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Finding the Fourth Proportional to 680,803.29, 939,471.35 and 374,821.57

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Solution

The fourth proportional to 680,803.29, 939,471.35 and 374,821.57 is: 517,233.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,803.29 : 939,471.35 = 374,821.57 : x
  2. Step 2: Convert to fraction form
    680,803.29/939,471.35 = 374,821.57/x
  3. Step 3: Cross multiply
    680,803.29x = 939,471.35 × 374,821.57
  4. Step 4: Simplify right side
    680,803.29x = 352,134,126,377.02
  5. Step 5: Solve for x
    x = 352,134,126,377.02/680,803.29
  6. Step 6: Final answer
    x = 517,233.29

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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.