Home / 821,568.20-1,230,278.70-539,558.60

Finding the Fourth Proportional to 821,568.20, 1,230,278.70 and 539,558.60

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Solution

The fourth proportional to 821,568.20, 1,230,278.70 and 539,558.60 is: 807,976.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,568.20 : 1,230,278.70 = 539,558.60 : x
  2. Step 2: Convert to fraction form
    821,568.20/1,230,278.70 = 539,558.60/x
  3. Step 3: Cross multiply
    821,568.20x = 1,230,278.70 × 539,558.60
  4. Step 4: Simplify right side
    821,568.20x = 663,807,452,981.82
  5. Step 5: Solve for x
    x = 663,807,452,981.82/821,568.20
  6. Step 6: Final answer
    x = 807,976.08

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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.