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Finding the Fourth Proportional to 1,339,697.70, 1,848,865.41 and 766,725.57

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Solution

The fourth proportional to 1,339,697.70, 1,848,865.41 and 766,725.57 is: 1,058,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,697.70 : 1,848,865.41 = 766,725.57 : x
  2. Step 2: Convert to fraction form
    1,339,697.70/1,848,865.41 = 766,725.57/x
  3. Step 3: Cross multiply
    1,339,697.70x = 1,848,865.41 × 766,725.57
  4. Step 4: Simplify right side
    1,339,697.70x = 1,417,572,385,335.53
  5. Step 5: Solve for x
    x = 1,417,572,385,335.53/1,339,697.70
  6. Step 6: Final answer
    x = 1,058,128.55

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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.