Home / 1,380,037.49-1,905,139-1,069,242.92

Finding the Fourth Proportional to 1,380,037.49, 1,905,139 and 1,069,242.92

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Solution

The fourth proportional to 1,380,037.49, 1,905,139 and 1,069,242.92 is: 1,476,087.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,037.49 : 1,905,139 = 1,069,242.92 : x
  2. Step 2: Convert to fraction form
    1,380,037.49/1,905,139 = 1,069,242.92/x
  3. Step 3: Cross multiply
    1,380,037.49x = 1,905,139 × 1,069,242.92
  4. Step 4: Simplify right side
    1,380,037.49x = 2,037,056,387,365.88
  5. Step 5: Solve for x
    x = 2,037,056,387,365.88/1,380,037.49
  6. Step 6: Final answer
    x = 1,476,087.72

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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.