Home / 809,772.60-1,215,533.70-455,478.60

Finding the Fourth Proportional to 809,772.60, 1,215,533.70 and 455,478.60

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Solution

The fourth proportional to 809,772.60, 1,215,533.70 and 455,478.60 is: 683,709.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,772.60 : 1,215,533.70 = 455,478.60 : x
  2. Step 2: Convert to fraction form
    809,772.60/1,215,533.70 = 455,478.60/x
  3. Step 3: Cross multiply
    809,772.60x = 1,215,533.70 × 455,478.60
  4. Step 4: Simplify right side
    809,772.60x = 553,649,587,928.82
  5. Step 5: Solve for x
    x = 553,649,587,928.82/809,772.60
  6. Step 6: Final answer
    x = 683,709.96

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1.5x scale

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.