Home / 2,128,631.40-3,192,947.10-780,345.90

Finding the Fourth Proportional to 2,128,631.40, 3,192,947.10 and 780,345.90

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Solution

The fourth proportional to 2,128,631.40, 3,192,947.10 and 780,345.90 is: 1,170,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,631.40 : 3,192,947.10 = 780,345.90 : x
  2. Step 2: Convert to fraction form
    2,128,631.40/3,192,947.10 = 780,345.90/x
  3. Step 3: Cross multiply
    2,128,631.40x = 3,192,947.10 × 780,345.90
  4. Step 4: Simplify right side
    2,128,631.40x = 2,491,603,178,401.89
  5. Step 5: Solve for x
    x = 2,491,603,178,401.89/2,128,631.40
  6. Step 6: Final answer
    x = 1,170,518.85

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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.