Home / 1,222,276.12-1,686,604.24-678,434.83

Finding the Fourth Proportional to 1,222,276.12, 1,686,604.24 and 678,434.83

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Solution

The fourth proportional to 1,222,276.12, 1,686,604.24 and 678,434.83 is: 936,164.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,276.12 : 1,686,604.24 = 678,434.83 : x
  2. Step 2: Convert to fraction form
    1,222,276.12/1,686,604.24 = 678,434.83/x
  3. Step 3: Cross multiply
    1,222,276.12x = 1,686,604.24 × 678,434.83
  4. Step 4: Simplify right side
    1,222,276.12x = 1,144,251,060,841.68
  5. Step 5: Solve for x
    x = 1,144,251,060,841.68/1,222,276.12
  6. Step 6: Final answer
    x = 936,164.13

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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.