Home / 1,387,791.76-2,080,157.20-907,820.32

Finding the Fourth Proportional to 1,387,791.76, 2,080,157.20 and 907,820.32

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Solution

The fourth proportional to 1,387,791.76, 2,080,157.20 and 907,820.32 is: 1,360,729.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,791.76 : 2,080,157.20 = 907,820.32 : x
  2. Step 2: Convert to fraction form
    1,387,791.76/2,080,157.20 = 907,820.32/x
  3. Step 3: Cross multiply
    1,387,791.76x = 2,080,157.20 × 907,820.32
  4. Step 4: Simplify right side
    1,387,791.76x = 1,888,408,974,954.30
  5. Step 5: Solve for x
    x = 1,888,408,974,954.30/1,387,791.76
  6. Step 6: Final answer
    x = 1,360,729.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.