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Finding the Fourth Proportional to 676,487.85, 933,568.31 and 386,093.63

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Solution

The fourth proportional to 676,487.85, 933,568.31 and 386,093.63 is: 532,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,487.85 : 933,568.31 = 386,093.63 : x
  2. Step 2: Convert to fraction form
    676,487.85/933,568.31 = 386,093.63/x
  3. Step 3: Cross multiply
    676,487.85x = 933,568.31 × 386,093.63
  4. Step 4: Simplify right side
    676,487.85x = 360,444,771,062.56
  5. Step 5: Solve for x
    x = 360,444,771,062.56/676,487.85
  6. Step 6: Final answer
    x = 532,817.80

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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.