Home / 821,426.80-1,232,356.20-260,460.40

Finding the Fourth Proportional to 821,426.80, 1,232,356.20 and 260,460.40

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Solution

The fourth proportional to 821,426.80, 1,232,356.20 and 260,460.40 is: 390,759.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,426.80 : 1,232,356.20 = 260,460.40 : x
  2. Step 2: Convert to fraction form
    821,426.80/1,232,356.20 = 260,460.40/x
  3. Step 3: Cross multiply
    821,426.80x = 1,232,356.20 × 260,460.40
  4. Step 4: Simplify right side
    821,426.80x = 320,979,988,794.48
  5. Step 5: Solve for x
    x = 320,979,988,794.48/821,426.80
  6. Step 6: Final answer
    x = 390,759.09

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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.