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Finding the Fourth Proportional to 490,368.41, 676,729.31 and 275,508.89

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Solution

The fourth proportional to 490,368.41, 676,729.31 and 275,508.89 is: 380,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,368.41 : 676,729.31 = 275,508.89 : x
  2. Step 2: Convert to fraction form
    490,368.41/676,729.31 = 275,508.89/x
  3. Step 3: Cross multiply
    490,368.41x = 676,729.31 × 275,508.89
  4. Step 4: Simplify right side
    490,368.41x = 186,444,936,267.38
  5. Step 5: Solve for x
    x = 186,444,936,267.38/490,368.41
  6. Step 6: Final answer
    x = 380,214.01

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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.