Home / 1,380,709.19-1,905,343.26-1,339,965.38

Finding the Fourth Proportional to 1,380,709.19, 1,905,343.26 and 1,339,965.38

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Solution

The fourth proportional to 1,380,709.19, 1,905,343.26 and 1,339,965.38 is: 1,849,117.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,709.19 : 1,905,343.26 = 1,339,965.38 : x
  2. Step 2: Convert to fraction form
    1,380,709.19/1,905,343.26 = 1,339,965.38/x
  3. Step 3: Cross multiply
    1,380,709.19x = 1,905,343.26 × 1,339,965.38
  4. Step 4: Simplify right side
    1,380,709.19x = 2,553,094,005,154.83
  5. Step 5: Solve for x
    x = 2,553,094,005,154.83/1,380,709.19
  6. Step 6: Final answer
    x = 1,849,117.84

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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.