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Finding the Fourth Proportional to 1,972,547.60, 2,957,093.40 and 1,339,408.40

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Solution

The fourth proportional to 1,972,547.60, 2,957,093.40 and 1,339,408.40 is: 2,007,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972,547.60 : 2,957,093.40 = 1,339,408.40 : x
  2. Step 2: Convert to fraction form
    1,972,547.60/2,957,093.40 = 1,339,408.40/x
  3. Step 3: Cross multiply
    1,972,547.60x = 2,957,093.40 × 1,339,408.40
  4. Step 4: Simplify right side
    1,972,547.60x = 3,960,755,739,544.56
  5. Step 5: Solve for x
    x = 3,960,755,739,544.56/1,972,547.60
  6. Step 6: Final answer
    x = 2,007,939.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.