Home / 809,769.60-1,215,529.20-455,475.60

Finding the Fourth Proportional to 809,769.60, 1,215,529.20 and 455,475.60

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Solution

The fourth proportional to 809,769.60, 1,215,529.20 and 455,475.60 is: 683,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,769.60 : 1,215,529.20 = 455,475.60 : x
  2. Step 2: Convert to fraction form
    809,769.60/1,215,529.20 = 455,475.60/x
  3. Step 3: Cross multiply
    809,769.60x = 1,215,529.20 × 455,475.60
  4. Step 4: Simplify right side
    809,769.60x = 553,643,891,687.52
  5. Step 5: Solve for x
    x = 553,643,891,687.52/809,769.60
  6. Step 6: Final answer
    x = 683,705.45

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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.