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Finding the Fourth Proportional to 625,039.20, 862,492.32 and 349,345.44

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Solution

The fourth proportional to 625,039.20, 862,492.32 and 349,345.44 is: 482,062.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,039.20 : 862,492.32 = 349,345.44 : x
  2. Step 2: Convert to fraction form
    625,039.20/862,492.32 = 349,345.44/x
  3. Step 3: Cross multiply
    625,039.20x = 862,492.32 × 349,345.44
  4. Step 4: Simplify right side
    625,039.20x = 301,307,759,027.02
  5. Step 5: Solve for x
    x = 301,307,759,027.02/625,039.20
  6. Step 6: Final answer
    x = 482,062.18

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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.