Home / 981,965.52-1,349,239.86-780,411.60

Finding the Fourth Proportional to 981,965.52, 1,349,239.86 and 780,411.60

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Solution

The fourth proportional to 981,965.52, 1,349,239.86 and 780,411.60 is: 1,072,300.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,965.52 : 1,349,239.86 = 780,411.60 : x
  2. Step 2: Convert to fraction form
    981,965.52/1,349,239.86 = 780,411.60/x
  3. Step 3: Cross multiply
    981,965.52x = 1,349,239.86 × 780,411.60
  4. Step 4: Simplify right side
    981,965.52x = 1,052,962,437,926.38
  5. Step 5: Solve for x
    x = 1,052,962,437,926.38/981,965.52
  6. Step 6: Final answer
    x = 1,072,300.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.