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Finding the Fourth Proportional to 625,172, 862,725.44 and 349,528.72

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Solution

The fourth proportional to 625,172, 862,725.44 and 349,528.72 is: 482,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,172 : 862,725.44 = 349,528.72 : x
  2. Step 2: Convert to fraction form
    625,172/862,725.44 = 349,528.72/x
  3. Step 3: Cross multiply
    625,172x = 862,725.44 × 349,528.72
  4. Step 4: Simplify right side
    625,172x = 301,547,318,754.64
  5. Step 5: Solve for x
    x = 301,547,318,754.64/625,172
  6. Step 6: Final answer
    x = 482,342.97

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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.