Home / 859,098.40-1,288,647.60-543,911.20

Finding the Fourth Proportional to 859,098.40, 1,288,647.60 and 543,911.20

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Solution

The fourth proportional to 859,098.40, 1,288,647.60 and 543,911.20 is: 815,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,098.40 : 1,288,647.60 = 543,911.20 : x
  2. Step 2: Convert to fraction form
    859,098.40/1,288,647.60 = 543,911.20/x
  3. Step 3: Cross multiply
    859,098.40x = 1,288,647.60 × 543,911.20
  4. Step 4: Simplify right side
    859,098.40x = 700,909,862,493.12
  5. Step 5: Solve for x
    x = 700,909,862,493.12/859,098.40
  6. Step 6: Final answer
    x = 815,866.80

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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.