Home / 1,520,468.20-2,280,778.19-455,408.78

Finding the Fourth Proportional to 1,520,468.20, 2,280,778.19 and 455,408.78

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Solution

The fourth proportional to 1,520,468.20, 2,280,778.19 and 455,408.78 is: 683,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520,468.20 : 2,280,778.19 = 455,408.78 : x
  2. Step 2: Convert to fraction form
    1,520,468.20/2,280,778.19 = 455,408.78/x
  3. Step 3: Cross multiply
    1,520,468.20x = 2,280,778.19 × 455,408.78
  4. Step 4: Simplify right side
    1,520,468.20x = 1,038,686,410,681.46
  5. Step 5: Solve for x
    x = 1,038,686,410,681.46/1,520,468.20
  6. Step 6: Final answer
    x = 683,135.90

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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.