Home / 1,216,561.12-1,678,836.88-672,684.98

Finding the Fourth Proportional to 1,216,561.12, 1,678,836.88 and 672,684.98

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Solution

The fourth proportional to 1,216,561.12, 1,678,836.88 and 672,684.98 is: 928,295.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,561.12 : 1,678,836.88 = 672,684.98 : x
  2. Step 2: Convert to fraction form
    1,216,561.12/1,678,836.88 = 672,684.98/x
  3. Step 3: Cross multiply
    1,216,561.12x = 1,678,836.88 × 672,684.98
  4. Step 4: Simplify right side
    1,216,561.12x = 1,129,328,350,214.46
  5. Step 5: Solve for x
    x = 1,129,328,350,214.46/1,216,561.12
  6. Step 6: Final answer
    x = 928,295.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.