Home / 1,428,493.85-1,971,378.27-783,937.26

Finding the Fourth Proportional to 1,428,493.85, 1,971,378.27 and 783,937.26

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Solution

The fourth proportional to 1,428,493.85, 1,971,378.27 and 783,937.26 is: 1,081,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,493.85 : 1,971,378.27 = 783,937.26 : x
  2. Step 2: Convert to fraction form
    1,428,493.85/1,971,378.27 = 783,937.26/x
  3. Step 3: Cross multiply
    1,428,493.85x = 1,971,378.27 × 783,937.26
  4. Step 4: Simplify right side
    1,428,493.85x = 1,545,436,879,407.34
  5. Step 5: Solve for x
    x = 1,545,436,879,407.34/1,428,493.85
  6. Step 6: Final answer
    x = 1,081,864.57

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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.