Home / 811,108.05-1,216,648.70-242,490.48

Finding the Fourth Proportional to 811,108.05, 1,216,648.70 and 242,490.48

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Solution

The fourth proportional to 811,108.05, 1,216,648.70 and 242,490.48 is: 363,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,108.05 : 1,216,648.70 = 242,490.48 : x
  2. Step 2: Convert to fraction form
    811,108.05/1,216,648.70 = 242,490.48/x
  3. Step 3: Cross multiply
    811,108.05x = 1,216,648.70 × 242,490.48
  4. Step 4: Simplify right side
    811,108.05x = 295,025,726,041.92
  5. Step 5: Solve for x
    x = 295,025,726,041.92/811,108.05
  6. Step 6: Final answer
    x = 363,731.72

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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.