Home / 1,178,115.20-1,625,331.12-681,307.28

Finding the Fourth Proportional to 1,178,115.20, 1,625,331.12 and 681,307.28

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Solution

The fourth proportional to 1,178,115.20, 1,625,331.12 and 681,307.28 is: 939,933.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,115.20 : 1,625,331.12 = 681,307.28 : x
  2. Step 2: Convert to fraction form
    1,178,115.20/1,625,331.12 = 681,307.28/x
  3. Step 3: Cross multiply
    1,178,115.20x = 1,625,331.12 × 681,307.28
  4. Step 4: Simplify right side
    1,178,115.20x = 1,107,349,924,466.55
  5. Step 5: Solve for x
    x = 1,107,349,924,466.55/1,178,115.20
  6. Step 6: Final answer
    x = 939,933.48

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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.