Home / 1,428,399.19-1,971,313.31-783,943.96

Finding the Fourth Proportional to 1,428,399.19, 1,971,313.31 and 783,943.96

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Solution

The fourth proportional to 1,428,399.19, 1,971,313.31 and 783,943.96 is: 1,081,909.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,399.19 : 1,971,313.31 = 783,943.96 : x
  2. Step 2: Convert to fraction form
    1,428,399.19/1,971,313.31 = 783,943.96/x
  3. Step 3: Cross multiply
    1,428,399.19x = 1,971,313.31 × 783,943.96
  4. Step 4: Simplify right side
    1,428,399.19x = 1,545,399,162,642.11
  5. Step 5: Solve for x
    x = 1,545,399,162,642.11/1,428,399.19
  6. Step 6: Final answer
    x = 1,081,909.86

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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.