Home / 856,400.40-1,284,600.60-574,390.80

Finding the Fourth Proportional to 856,400.40, 1,284,600.60 and 574,390.80

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Solution

The fourth proportional to 856,400.40, 1,284,600.60 and 574,390.80 is: 861,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,400.40 : 1,284,600.60 = 574,390.80 : x
  2. Step 2: Convert to fraction form
    856,400.40/1,284,600.60 = 574,390.80/x
  3. Step 3: Cross multiply
    856,400.40x = 1,284,600.60 × 574,390.80
  4. Step 4: Simplify right side
    856,400.40x = 737,862,766,314.48
  5. Step 5: Solve for x
    x = 737,862,766,314.48/856,400.40
  6. Step 6: Final answer
    x = 861,586.20

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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.