Home / 821,217.15-1,132,629.08-498,918.15

Finding the Fourth Proportional to 821,217.15, 1,132,629.08 and 498,918.15

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Solution

The fourth proportional to 821,217.15, 1,132,629.08 and 498,918.15 is: 688,111.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,217.15 : 1,132,629.08 = 498,918.15 : x
  2. Step 2: Convert to fraction form
    821,217.15/1,132,629.08 = 498,918.15/x
  3. Step 3: Cross multiply
    821,217.15x = 1,132,629.08 × 498,918.15
  4. Step 4: Simplify right side
    821,217.15x = 565,089,202,735.21
  5. Step 5: Solve for x
    x = 565,089,202,735.21/821,217.15
  6. Step 6: Final answer
    x = 688,111.79

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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.