Home / 981,315.31-1,471,370.16-381,577.40

Finding the Fourth Proportional to 981,315.31, 1,471,370.16 and 381,577.40

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Solution

The fourth proportional to 981,315.31, 1,471,370.16 and 381,577.40 is: 572,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,315.31 : 1,471,370.16 = 381,577.40 : x
  2. Step 2: Convert to fraction form
    981,315.31/1,471,370.16 = 381,577.40/x
  3. Step 3: Cross multiply
    981,315.31x = 1,471,370.16 × 381,577.40
  4. Step 4: Simplify right side
    981,315.31x = 561,441,594,164.45
  5. Step 5: Solve for x
    x = 561,441,594,164.45/981,315.31
  6. Step 6: Final answer
    x = 572,131.70

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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.