Home / 809,721.36-1,214,206.20-472,861.80

Finding the Fourth Proportional to 809,721.36, 1,214,206.20 and 472,861.80

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Solution

The fourth proportional to 809,721.36, 1,214,206.20 and 472,861.80 is: 709,073.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,721.36 : 1,214,206.20 = 472,861.80 : x
  2. Step 2: Convert to fraction form
    809,721.36/1,214,206.20 = 472,861.80/x
  3. Step 3: Cross multiply
    809,721.36x = 1,214,206.20 × 472,861.80
  4. Step 4: Simplify right side
    809,721.36x = 574,151,729,303.16
  5. Step 5: Solve for x
    x = 574,151,729,303.16/809,721.36
  6. Step 6: Final answer
    x = 709,073.22

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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.