Home / 1,288,676.14-1,932,864.09-342,120.40

Finding the Fourth Proportional to 1,288,676.14, 1,932,864.09 and 342,120.40

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Solution

The fourth proportional to 1,288,676.14, 1,932,864.09 and 342,120.40 is: 513,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,676.14 : 1,932,864.09 = 342,120.40 : x
  2. Step 2: Convert to fraction form
    1,288,676.14/1,932,864.09 = 342,120.40/x
  3. Step 3: Cross multiply
    1,288,676.14x = 1,932,864.09 × 342,120.40
  4. Step 4: Simplify right side
    1,288,676.14x = 661,272,235,616.44
  5. Step 5: Solve for x
    x = 661,272,235,616.44/1,288,676.14
  6. Step 6: Final answer
    x = 513,140.75

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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.