Home / 1,392,888.29-1,922,265.90-781,237.26

Finding the Fourth Proportional to 1,392,888.29, 1,922,265.90 and 781,237.26

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Solution

The fourth proportional to 1,392,888.29, 1,922,265.90 and 781,237.26 is: 1,078,152.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,888.29 : 1,922,265.90 = 781,237.26 : x
  2. Step 2: Convert to fraction form
    1,392,888.29/1,922,265.90 = 781,237.26/x
  3. Step 3: Cross multiply
    1,392,888.29x = 1,922,265.90 × 781,237.26
  4. Step 4: Simplify right side
    1,392,888.29x = 1,501,745,744,707.43
  5. Step 5: Solve for x
    x = 1,501,745,744,707.43/1,392,888.29
  6. Step 6: Final answer
    x = 1,078,152.33

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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.