Home / 1,256,021.88-1,732,671.12-820,693.71

Finding the Fourth Proportional to 1,256,021.88, 1,732,671.12 and 820,693.71

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Solution

The fourth proportional to 1,256,021.88, 1,732,671.12 and 820,693.71 is: 1,132,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256,021.88 : 1,732,671.12 = 820,693.71 : x
  2. Step 2: Convert to fraction form
    1,256,021.88/1,732,671.12 = 820,693.71/x
  3. Step 3: Cross multiply
    1,256,021.88x = 1,732,671.12 × 820,693.71
  4. Step 4: Simplify right side
    1,256,021.88x = 1,421,992,294,507.93
  5. Step 5: Solve for x
    x = 1,421,992,294,507.93/1,256,021.88
  6. Step 6: Final answer
    x = 1,132,139.75

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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.