Home / 1,389,615.59-1,917,232.38-777,671.12

Finding the Fourth Proportional to 1,389,615.59, 1,917,232.38 and 777,671.12

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Solution

The fourth proportional to 1,389,615.59, 1,917,232.38 and 777,671.12 is: 1,072,941.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,615.59 : 1,917,232.38 = 777,671.12 : x
  2. Step 2: Convert to fraction form
    1,389,615.59/1,917,232.38 = 777,671.12/x
  3. Step 3: Cross multiply
    1,389,615.59x = 1,917,232.38 × 777,671.12
  4. Step 4: Simplify right side
    1,389,615.59x = 1,490,976,242,668.70
  5. Step 5: Solve for x
    x = 1,490,976,242,668.70/1,389,615.59
  6. Step 6: Final answer
    x = 1,072,941.51

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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.