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Finding the Fourth Proportional to 490,211.10, 735,754.05 and 423,726.30

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Solution

The fourth proportional to 490,211.10, 735,754.05 and 423,726.30 is: 635,967.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,211.10 : 735,754.05 = 423,726.30 : x
  2. Step 2: Convert to fraction form
    490,211.10/735,754.05 = 423,726.30/x
  3. Step 3: Cross multiply
    490,211.10x = 735,754.05 × 423,726.30
  4. Step 4: Simplify right side
    490,211.10x = 311,758,341,316.52
  5. Step 5: Solve for x
    x = 311,758,341,316.52/490,211.10
  6. Step 6: Final answer
    x = 635,967.53

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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.