Home / 1,405,855.05-1,940,076.47-761,275.21

Finding the Fourth Proportional to 1,405,855.05, 1,940,076.47 and 761,275.21

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Solution

The fourth proportional to 1,405,855.05, 1,940,076.47 and 761,275.21 is: 1,050,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,855.05 : 1,940,076.47 = 761,275.21 : x
  2. Step 2: Convert to fraction form
    1,405,855.05/1,940,076.47 = 761,275.21/x
  3. Step 3: Cross multiply
    1,405,855.05x = 1,940,076.47 × 761,275.21
  4. Step 4: Simplify right side
    1,405,855.05x = 1,476,932,122,115.31
  5. Step 5: Solve for x
    x = 1,476,932,122,115.31/1,405,855.05
  6. Step 6: Final answer
    x = 1,050,557.90

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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.