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Finding the Fourth Proportional to 490,436.32, 676,813.98 and 275,563.57

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Solution

The fourth proportional to 490,436.32, 676,813.98 and 275,563.57 is: 380,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,436.32 : 676,813.98 = 275,563.57 : x
  2. Step 2: Convert to fraction form
    490,436.32/676,813.98 = 275,563.57/x
  3. Step 3: Cross multiply
    490,436.32x = 676,813.98 × 275,563.57
  4. Step 4: Simplify right side
    490,436.32x = 186,505,276,554.71
  5. Step 5: Solve for x
    x = 186,505,276,554.71/490,436.32
  6. Step 6: Final answer
    x = 380,284.39

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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.