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Finding the Fourth Proportional to 556,479.75, 767,942.13 and 314,757.12

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Solution

The fourth proportional to 556,479.75, 767,942.13 and 314,757.12 is: 434,364.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,479.75 : 767,942.13 = 314,757.12 : x
  2. Step 2: Convert to fraction form
    556,479.75/767,942.13 = 314,757.12/x
  3. Step 3: Cross multiply
    556,479.75x = 767,942.13 × 314,757.12
  4. Step 4: Simplify right side
    556,479.75x = 241,715,253,165.47
  5. Step 5: Solve for x
    x = 241,715,253,165.47/556,479.75
  6. Step 6: Final answer
    x = 434,364.87

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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.