Home / 1,387,863.61-1,915,659.05-807,223.31

Finding the Fourth Proportional to 1,387,863.61, 1,915,659.05 and 807,223.31

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Solution

The fourth proportional to 1,387,863.61, 1,915,659.05 and 807,223.31 is: 1,114,205.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,863.61 : 1,915,659.05 = 807,223.31 : x
  2. Step 2: Convert to fraction form
    1,387,863.61/1,915,659.05 = 807,223.31/x
  3. Step 3: Cross multiply
    1,387,863.61x = 1,915,659.05 × 807,223.31
  4. Step 4: Simplify right side
    1,387,863.61x = 1,546,364,639,172.46
  5. Step 5: Solve for x
    x = 1,546,364,639,172.46/1,387,863.61
  6. Step 6: Final answer
    x = 1,114,205.05

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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.