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Finding the Fourth Proportional to 490,635.32, 677,095.94 and 275,774.72

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Solution

The fourth proportional to 490,635.32, 677,095.94 and 275,774.72 is: 380,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,635.32 : 677,095.94 = 275,774.72 : x
  2. Step 2: Convert to fraction form
    490,635.32/677,095.94 = 275,774.72/x
  3. Step 3: Cross multiply
    490,635.32x = 677,095.94 × 275,774.72
  4. Step 4: Simplify right side
    490,635.32x = 186,725,941,887.76
  5. Step 5: Solve for x
    x = 186,725,941,887.76/490,635.32
  6. Step 6: Final answer
    x = 380,579.90

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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.