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Finding the Fourth Proportional to 1,383,801, 1,908,654.66 and 899,462.76

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Solution

The fourth proportional to 1,383,801, 1,908,654.66 and 899,462.76 is: 1,240,614.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,801 : 1,908,654.66 = 899,462.76 : x
  2. Step 2: Convert to fraction form
    1,383,801/1,908,654.66 = 899,462.76/x
  3. Step 3: Cross multiply
    1,383,801x = 1,908,654.66 × 899,462.76
  4. Step 4: Simplify right side
    1,383,801x = 1,716,763,788,370.46
  5. Step 5: Solve for x
    x = 1,716,763,788,370.46/1,383,801
  6. Step 6: Final answer
    x = 1,240,614.65

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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.