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Finding the Fourth Proportional to 624,470.30, 861,751.64 and 348,820.82

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Solution

The fourth proportional to 624,470.30, 861,751.64 and 348,820.82 is: 481,363.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,470.30 : 861,751.64 = 348,820.82 : x
  2. Step 2: Convert to fraction form
    624,470.30/861,751.64 = 348,820.82/x
  3. Step 3: Cross multiply
    624,470.30x = 861,751.64 × 348,820.82
  4. Step 4: Simplify right side
    624,470.30x = 300,596,910,264.44
  5. Step 5: Solve for x
    x = 300,596,910,264.44/624,470.30
  6. Step 6: Final answer
    x = 481,363.03

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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.