Home / 1,069,122.32-1,475,388.78-639,402.48

Finding the Fourth Proportional to 1,069,122.32, 1,475,388.78 and 639,402.48

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Solution

The fourth proportional to 1,069,122.32, 1,475,388.78 and 639,402.48 is: 882,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,122.32 : 1,475,388.78 = 639,402.48 : x
  2. Step 2: Convert to fraction form
    1,069,122.32/1,475,388.78 = 639,402.48/x
  3. Step 3: Cross multiply
    1,069,122.32x = 1,475,388.78 × 639,402.48
  4. Step 4: Simplify right side
    1,069,122.32x = 943,367,244,896.18
  5. Step 5: Solve for x
    x = 943,367,244,896.18/1,069,122.32
  6. Step 6: Final answer
    x = 882,375.41

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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.