Home / 811,981.80-1,217,972.70-251,015.40

Finding the Fourth Proportional to 811,981.80, 1,217,972.70 and 251,015.40

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Solution

The fourth proportional to 811,981.80, 1,217,972.70 and 251,015.40 is: 376,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,981.80 : 1,217,972.70 = 251,015.40 : x
  2. Step 2: Convert to fraction form
    811,981.80/1,217,972.70 = 251,015.40/x
  3. Step 3: Cross multiply
    811,981.80x = 1,217,972.70 × 251,015.40
  4. Step 4: Simplify right side
    811,981.80x = 305,729,904,479.58
  5. Step 5: Solve for x
    x = 305,729,904,479.58/811,981.80
  6. Step 6: Final answer
    x = 376,523.10

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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.