Home / 811,376.80-1,217,065.20-798,935.20

Finding the Fourth Proportional to 811,376.80, 1,217,065.20 and 798,935.20

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Solution

The fourth proportional to 811,376.80, 1,217,065.20 and 798,935.20 is: 1,198,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,376.80 : 1,217,065.20 = 798,935.20 : x
  2. Step 2: Convert to fraction form
    811,376.80/1,217,065.20 = 798,935.20/x
  3. Step 3: Cross multiply
    811,376.80x = 1,217,065.20 × 798,935.20
  4. Step 4: Simplify right side
    811,376.80x = 972,356,228,975.04
  5. Step 5: Solve for x
    x = 972,356,228,975.04/811,376.80
  6. Step 6: Final answer
    x = 1,198,402.80

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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.