Home / 821,724.20-1,230,512.70-655,836.20

Finding the Fourth Proportional to 821,724.20, 1,230,512.70 and 655,836.20

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Solution

The fourth proportional to 821,724.20, 1,230,512.70 and 655,836.20 is: 982,099.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,724.20 : 1,230,512.70 = 655,836.20 : x
  2. Step 2: Convert to fraction form
    821,724.20/1,230,512.70 = 655,836.20/x
  3. Step 3: Cross multiply
    821,724.20x = 1,230,512.70 × 655,836.20
  4. Step 4: Simplify right side
    821,724.20x = 807,014,773,219.74
  5. Step 5: Solve for x
    x = 807,014,773,219.74/821,724.20
  6. Step 6: Final answer
    x = 982,099.31

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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.