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Finding the Fourth Proportional to 490,617.48, 734,459.40 and 300,479.16

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Solution

The fourth proportional to 490,617.48, 734,459.40 and 300,479.16 is: 449,820.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,617.48 : 734,459.40 = 300,479.16 : x
  2. Step 2: Convert to fraction form
    490,617.48/734,459.40 = 300,479.16/x
  3. Step 3: Cross multiply
    490,617.48x = 734,459.40 × 300,479.16
  4. Step 4: Simplify right side
    490,617.48x = 220,689,743,566.10
  5. Step 5: Solve for x
    x = 220,689,743,566.10/490,617.48
  6. Step 6: Final answer
    x = 449,820.38

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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.