Home / 821,569.20-1,230,280.20-539,559.60

Finding the Fourth Proportional to 821,569.20, 1,230,280.20 and 539,559.60

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Solution

The fourth proportional to 821,569.20, 1,230,280.20 and 539,559.60 is: 807,977.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,569.20 : 1,230,280.20 = 539,559.60 : x
  2. Step 2: Convert to fraction form
    821,569.20/1,230,280.20 = 539,559.60/x
  3. Step 3: Cross multiply
    821,569.20x = 1,230,280.20 × 539,559.60
  4. Step 4: Simplify right side
    821,569.20x = 663,809,492,599.92
  5. Step 5: Solve for x
    x = 663,809,492,599.92/821,569.20
  6. Step 6: Final answer
    x = 807,977.58

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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.