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Finding the Fourth Proportional to 547,246.80, 821,158.56 and 388,348.92

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Solution

The fourth proportional to 547,246.80, 821,158.56 and 388,348.92 is: 582,728.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,246.80 : 821,158.56 = 388,348.92 : x
  2. Step 2: Convert to fraction form
    547,246.80/821,158.56 = 388,348.92/x
  3. Step 3: Cross multiply
    547,246.80x = 821,158.56 × 388,348.92
  4. Step 4: Simplify right side
    547,246.80x = 318,896,039,924.76
  5. Step 5: Solve for x
    x = 318,896,039,924.76/547,246.80
  6. Step 6: Final answer
    x = 582,728.01

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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.