Home / 821,255.20-1,232,012.40-260,346.40

Finding the Fourth Proportional to 821,255.20, 1,232,012.40 and 260,346.40

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Solution

The fourth proportional to 821,255.20, 1,232,012.40 and 260,346.40 is: 390,560.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,255.20 : 1,232,012.40 = 260,346.40 : x
  2. Step 2: Convert to fraction form
    821,255.20/1,232,012.40 = 260,346.40/x
  3. Step 3: Cross multiply
    821,255.20x = 1,232,012.40 × 260,346.40
  4. Step 4: Simplify right side
    821,255.20x = 320,749,993,095.36
  5. Step 5: Solve for x
    x = 320,749,993,095.36/821,255.20
  6. Step 6: Final answer
    x = 390,560.68

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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.