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Finding the Fourth Proportional to 663,655.96, 996,480.84 and 379,667.16

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Solution

The fourth proportional to 663,655.96, 996,480.84 and 379,667.16 is: 570,071.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,655.96 : 996,480.84 = 379,667.16 : x
  2. Step 2: Convert to fraction form
    663,655.96/996,480.84 = 379,667.16/x
  3. Step 3: Cross multiply
    663,655.96x = 996,480.84 × 379,667.16
  4. Step 4: Simplify right side
    663,655.96x = 378,331,050,517.21
  5. Step 5: Solve for x
    x = 378,331,050,517.21/663,655.96
  6. Step 6: Final answer
    x = 570,071.05

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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.