Home / 1,428,480.80-1,971,327.70-783,960.96

Finding the Fourth Proportional to 1,428,480.80, 1,971,327.70 and 783,960.96

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Solution

The fourth proportional to 1,428,480.80, 1,971,327.70 and 783,960.96 is: 1,081,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,480.80 : 1,971,327.70 = 783,960.96 : x
  2. Step 2: Convert to fraction form
    1,428,480.80/1,971,327.70 = 783,960.96/x
  3. Step 3: Cross multiply
    1,428,480.80x = 1,971,327.70 × 783,960.96
  4. Step 4: Simplify right side
    1,428,480.80x = 1,545,443,956,166.59
  5. Step 5: Solve for x
    x = 1,545,443,956,166.59/1,428,480.80
  6. Step 6: Final answer
    x = 1,081,879.40

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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.