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Finding the Fourth Proportional to 618,980.02, 928,470.03 and 408,568.75

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Solution

The fourth proportional to 618,980.02, 928,470.03 and 408,568.75 is: 612,853.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,980.02 : 928,470.03 = 408,568.75 : x
  2. Step 2: Convert to fraction form
    618,980.02/928,470.03 = 408,568.75/x
  3. Step 3: Cross multiply
    618,980.02x = 928,470.03 × 408,568.75
  4. Step 4: Simplify right side
    618,980.02x = 379,343,839,569.56
  5. Step 5: Solve for x
    x = 379,343,839,569.56/618,980.02
  6. Step 6: Final answer
    x = 612,853.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.