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Finding the Fourth Proportional to 723,900.08, 998,981.72 and 397,215.24

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Solution

The fourth proportional to 723,900.08, 998,981.72 and 397,215.24 is: 548,156.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,900.08 : 998,981.72 = 397,215.24 : x
  2. Step 2: Convert to fraction form
    723,900.08/998,981.72 = 397,215.24/x
  3. Step 3: Cross multiply
    723,900.08x = 998,981.72 × 397,215.24
  4. Step 4: Simplify right side
    723,900.08x = 396,810,763,665.41
  5. Step 5: Solve for x
    x = 396,810,763,665.41/723,900.08
  6. Step 6: Final answer
    x = 548,156.82

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1.5x scale

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.