Home / 513,984.96-709,297.56-287,629.92

Finding the Fourth Proportional to 513,984.96, 709,297.56 and 287,629.92

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Solution

The fourth proportional to 513,984.96, 709,297.56 and 287,629.92 is: 396,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,984.96 : 709,297.56 = 287,629.92 : x
  2. Step 2: Convert to fraction form
    513,984.96/709,297.56 = 287,629.92/x
  3. Step 3: Cross multiply
    513,984.96x = 709,297.56 × 287,629.92
  4. Step 4: Simplify right side
    513,984.96x = 204,015,200,439.00
  5. Step 5: Solve for x
    x = 204,015,200,439.00/513,984.96
  6. Step 6: Final answer
    x = 396,928.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.