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Finding the Fourth Proportional to 676,218.81, 933,181.97 and 389,757.35

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Solution

The fourth proportional to 676,218.81, 933,181.97 and 389,757.35 is: 537,865.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,218.81 : 933,181.97 = 389,757.35 : x
  2. Step 2: Convert to fraction form
    676,218.81/933,181.97 = 389,757.35/x
  3. Step 3: Cross multiply
    676,218.81x = 933,181.97 × 389,757.35
  4. Step 4: Simplify right side
    676,218.81x = 363,714,532,079.15
  5. Step 5: Solve for x
    x = 363,714,532,079.15/676,218.81
  6. Step 6: Final answer
    x = 537,865.15

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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.