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Finding the Fourth Proportional to 1,380,600.98, 1,905,211.18 and 760,394.24

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Solution

The fourth proportional to 1,380,600.98, 1,905,211.18 and 760,394.24 is: 1,049,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,600.98 : 1,905,211.18 = 760,394.24 : x
  2. Step 2: Convert to fraction form
    1,380,600.98/1,905,211.18 = 760,394.24/x
  3. Step 3: Cross multiply
    1,380,600.98x = 1,905,211.18 × 760,394.24
  4. Step 4: Simplify right side
    1,380,600.98x = 1,448,711,607,255.60
  5. Step 5: Solve for x
    x = 1,448,711,607,255.60/1,380,600.98
  6. Step 6: Final answer
    x = 1,049,334.04

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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.