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Finding the Fourth Proportional to 676,399.68, 933,452.64 and 374,621.76

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Solution

The fourth proportional to 676,399.68, 933,452.64 and 374,621.76 is: 516,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,399.68 : 933,452.64 = 374,621.76 : x
  2. Step 2: Convert to fraction form
    676,399.68/933,452.64 = 374,621.76/x
  3. Step 3: Cross multiply
    676,399.68x = 933,452.64 × 374,621.76
  4. Step 4: Simplify right side
    676,399.68x = 349,691,670,873.45
  5. Step 5: Solve for x
    x = 349,691,670,873.45/676,399.68
  6. Step 6: Final answer
    x = 516,989.70

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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.