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Finding the Fourth Proportional to 621,373.32, 857,487.03 and 349,441.13

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Solution

The fourth proportional to 621,373.32, 857,487.03 and 349,441.13 is: 482,224.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,373.32 : 857,487.03 = 349,441.13 : x
  2. Step 2: Convert to fraction form
    621,373.32/857,487.03 = 349,441.13/x
  3. Step 3: Cross multiply
    621,373.32x = 857,487.03 × 349,441.13
  4. Step 4: Simplify right side
    621,373.32x = 299,641,236,723.54
  5. Step 5: Solve for x
    x = 299,641,236,723.54/621,373.32
  6. Step 6: Final answer
    x = 482,224.18

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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.