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Finding the Fourth Proportional to 743,042, 1,025,388.88 and 403,512.64

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Solution

The fourth proportional to 743,042, 1,025,388.88 and 403,512.64 is: 556,842.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,042 : 1,025,388.88 = 403,512.64 : x
  2. Step 2: Convert to fraction form
    743,042/1,025,388.88 = 403,512.64/x
  3. Step 3: Cross multiply
    743,042x = 1,025,388.88 × 403,512.64
  4. Step 4: Simplify right side
    743,042x = 413,757,373,995.44
  5. Step 5: Solve for x
    x = 413,757,373,995.44/743,042
  6. Step 6: Final answer
    x = 556,842.51

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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.