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Finding the Fourth Proportional to 490,859.72, 677,437.61 and 300,000.23

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Solution

The fourth proportional to 490,859.72, 677,437.61 and 300,000.23 is: 414,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,859.72 : 677,437.61 = 300,000.23 : x
  2. Step 2: Convert to fraction form
    490,859.72/677,437.61 = 300,000.23/x
  3. Step 3: Cross multiply
    490,859.72x = 677,437.61 × 300,000.23
  4. Step 4: Simplify right side
    490,859.72x = 203,231,433,923.46
  5. Step 5: Solve for x
    x = 203,231,433,923.46/490,859.72
  6. Step 6: Final answer
    x = 414,031.60

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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.