Home / 910,419.90-1,365,629.85-311,400.60

Finding the Fourth Proportional to 910,419.90, 1,365,629.85 and 311,400.60

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Solution

The fourth proportional to 910,419.90, 1,365,629.85 and 311,400.60 is: 467,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,419.90 : 1,365,629.85 = 311,400.60 : x
  2. Step 2: Convert to fraction form
    910,419.90/1,365,629.85 = 311,400.60/x
  3. Step 3: Cross multiply
    910,419.90x = 1,365,629.85 × 311,400.60
  4. Step 4: Simplify right side
    910,419.90x = 425,257,954,667.91
  5. Step 5: Solve for x
    x = 425,257,954,667.91/910,419.90
  6. Step 6: Final answer
    x = 467,100.90

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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.