Home / 811,683.60-1,120,156.38-449,101.56

Finding the Fourth Proportional to 811,683.60, 1,120,156.38 and 449,101.56

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Solution

The fourth proportional to 811,683.60, 1,120,156.38 and 449,101.56 is: 619,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,683.60 : 1,120,156.38 = 449,101.56 : x
  2. Step 2: Convert to fraction form
    811,683.60/1,120,156.38 = 449,101.56/x
  3. Step 3: Cross multiply
    811,683.60x = 1,120,156.38 × 449,101.56
  4. Step 4: Simplify right side
    811,683.60x = 503,063,977,701.95
  5. Step 5: Solve for x
    x = 503,063,977,701.95/811,683.60
  6. Step 6: Final answer
    x = 619,778.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.