Home / 866,561.60-1,300,610.40-511,131.20

Finding the Fourth Proportional to 866,561.60, 1,300,610.40 and 511,131.20

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Solution

The fourth proportional to 866,561.60, 1,300,610.40 and 511,131.20 is: 767,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,561.60 : 1,300,610.40 = 511,131.20 : x
  2. Step 2: Convert to fraction form
    866,561.60/1,300,610.40 = 511,131.20/x
  3. Step 3: Cross multiply
    866,561.60x = 1,300,610.40 × 511,131.20
  4. Step 4: Simplify right side
    866,561.60x = 664,782,554,484.48
  5. Step 5: Solve for x
    x = 664,782,554,484.48/866,561.60
  6. Step 6: Final answer
    x = 767,149.80

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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.