Home / 1,386,306.80-2,079,658.56-426,843.58

Finding the Fourth Proportional to 1,386,306.80, 2,079,658.56 and 426,843.58

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Solution

The fourth proportional to 1,386,306.80, 2,079,658.56 and 426,843.58 is: 640,326.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,306.80 : 2,079,658.56 = 426,843.58 : x
  2. Step 2: Convert to fraction form
    1,386,306.80/2,079,658.56 = 426,843.58/x
  3. Step 3: Cross multiply
    1,386,306.80x = 2,079,658.56 × 426,843.58
  4. Step 4: Simplify right side
    1,386,306.80x = 887,688,904,928.05
  5. Step 5: Solve for x
    x = 887,688,904,928.05/1,386,306.80
  6. Step 6: Final answer
    x = 640,326.45

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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.