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Finding the Fourth Proportional to 1,745,841.40, 2,408,983.54 and 981,747.40

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Solution

The fourth proportional to 1,745,841.40, 2,408,983.54 and 981,747.40 is: 1,354,655.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745,841.40 : 2,408,983.54 = 981,747.40 : x
  2. Step 2: Convert to fraction form
    1,745,841.40/2,408,983.54 = 981,747.40/x
  3. Step 3: Cross multiply
    1,745,841.40x = 2,408,983.54 × 981,747.40
  4. Step 4: Simplify right side
    1,745,841.40x = 2,365,013,327,037.80
  5. Step 5: Solve for x
    x = 2,365,013,327,037.80/1,745,841.40
  6. Step 6: Final answer
    x = 1,354,655.31

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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.