Home / 821,569.70-1,230,280.95-539,560.10

Finding the Fourth Proportional to 821,569.70, 1,230,280.95 and 539,560.10

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Solution

The fourth proportional to 821,569.70, 1,230,280.95 and 539,560.10 is: 807,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,569.70 : 1,230,280.95 = 539,560.10 : x
  2. Step 2: Convert to fraction form
    821,569.70/1,230,280.95 = 539,560.10/x
  3. Step 3: Cross multiply
    821,569.70x = 1,230,280.95 × 539,560.10
  4. Step 4: Simplify right side
    821,569.70x = 663,810,512,410.10
  5. Step 5: Solve for x
    x = 663,810,512,410.10/821,569.70
  6. Step 6: Final answer
    x = 807,978.33

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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.