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Finding the Fourth Proportional to 490,609.80, 734,165.10 and 340,144.20

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Solution

The fourth proportional to 490,609.80, 734,165.10 and 340,144.20 is: 509,003.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,609.80 : 734,165.10 = 340,144.20 : x
  2. Step 2: Convert to fraction form
    490,609.80/734,165.10 = 340,144.20/x
  3. Step 3: Cross multiply
    490,609.80x = 734,165.10 × 340,144.20
  4. Step 4: Simplify right side
    490,609.80x = 249,722,000,607.42
  5. Step 5: Solve for x
    x = 249,722,000,607.42/490,609.80
  6. Step 6: Final answer
    x = 509,003.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.