Home / 718,942.40-1,079,616.64-690,335.36

Finding the Fourth Proportional to 718,942.40, 1,079,616.64 and 690,335.36

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Solution

The fourth proportional to 718,942.40, 1,079,616.64 and 690,335.36 is: 1,036,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,942.40 : 1,079,616.64 = 690,335.36 : x
  2. Step 2: Convert to fraction form
    718,942.40/1,079,616.64 = 690,335.36/x
  3. Step 3: Cross multiply
    718,942.40x = 1,079,616.64 × 690,335.36
  4. Step 4: Simplify right side
    718,942.40x = 745,297,541,836.39
  5. Step 5: Solve for x
    x = 745,297,541,836.39/718,942.40
  6. Step 6: Final answer
    x = 1,036,658.21

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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.