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Finding the Fourth Proportional to 490,346.38, 676,695.42 and 275,482.12

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Solution

The fourth proportional to 490,346.38, 676,695.42 and 275,482.12 is: 380,175.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,346.38 : 676,695.42 = 275,482.12 : x
  2. Step 2: Convert to fraction form
    490,346.38/676,695.42 = 275,482.12/x
  3. Step 3: Cross multiply
    490,346.38x = 676,695.42 × 275,482.12
  4. Step 4: Simplify right side
    490,346.38x = 186,417,488,895.89
  5. Step 5: Solve for x
    x = 186,417,488,895.89/490,346.38
  6. Step 6: Final answer
    x = 380,175.11

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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.