Home / 1,226,805.20-1,692,987.72-690,261.20

Finding the Fourth Proportional to 1,226,805.20, 1,692,987.72 and 690,261.20

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Solution

The fourth proportional to 1,226,805.20, 1,692,987.72 and 690,261.20 is: 952,558.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,805.20 : 1,692,987.72 = 690,261.20 : x
  2. Step 2: Convert to fraction form
    1,226,805.20/1,692,987.72 = 690,261.20/x
  3. Step 3: Cross multiply
    1,226,805.20x = 1,692,987.72 × 690,261.20
  4. Step 4: Simplify right side
    1,226,805.20x = 1,168,603,735,192.46
  5. Step 5: Solve for x
    x = 1,168,603,735,192.46/1,226,805.20
  6. Step 6: Final answer
    x = 952,558.51

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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.