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Finding the Fourth Proportional to 490,919.98, 677,455.85 and 297,442.24

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Solution

The fourth proportional to 490,919.98, 677,455.85 and 297,442.24 is: 410,461.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,919.98 : 677,455.85 = 297,442.24 : x
  2. Step 2: Convert to fraction form
    490,919.98/677,455.85 = 297,442.24/x
  3. Step 3: Cross multiply
    490,919.98x = 677,455.85 × 297,442.24
  4. Step 4: Simplify right side
    490,919.98x = 201,503,988,385.76
  5. Step 5: Solve for x
    x = 201,503,988,385.76/490,919.98
  6. Step 6: Final answer
    x = 410,461.98

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1.5x scale

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.