Home / 809,201.60-1,213,510.80-409,709.60

Finding the Fourth Proportional to 809,201.60, 1,213,510.80 and 409,709.60

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Solution

The fourth proportional to 809,201.60, 1,213,510.80 and 409,709.60 is: 614,416.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,201.60 : 1,213,510.80 = 409,709.60 : x
  2. Step 2: Convert to fraction form
    809,201.60/1,213,510.80 = 409,709.60/x
  3. Step 3: Cross multiply
    809,201.60x = 1,213,510.80 × 409,709.60
  4. Step 4: Simplify right side
    809,201.60x = 497,187,024,463.68
  5. Step 5: Solve for x
    x = 497,187,024,463.68/809,201.60
  6. Step 6: Final answer
    x = 614,416.76

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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.