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Finding the Fourth Proportional to 490,077.20, 735,288.60 and 472,797.20

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Solution

The fourth proportional to 490,077.20, 735,288.60 and 472,797.20 is: 709,362.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,077.20 : 735,288.60 = 472,797.20 : x
  2. Step 2: Convert to fraction form
    490,077.20/735,288.60 = 472,797.20/x
  3. Step 3: Cross multiply
    490,077.20x = 735,288.60 × 472,797.20
  4. Step 4: Simplify right side
    490,077.20x = 347,642,391,271.92
  5. Step 5: Solve for x
    x = 347,642,391,271.92/490,077.20
  6. Step 6: Final answer
    x = 709,362.51

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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.