Home / 780,057.90-1,170,086.85-654,086.70

Finding the Fourth Proportional to 780,057.90, 1,170,086.85 and 654,086.70

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Solution

The fourth proportional to 780,057.90, 1,170,086.85 and 654,086.70 is: 981,130.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,057.90 : 1,170,086.85 = 654,086.70 : x
  2. Step 2: Convert to fraction form
    780,057.90/1,170,086.85 = 654,086.70/x
  3. Step 3: Cross multiply
    780,057.90x = 1,170,086.85 × 654,086.70
  4. Step 4: Simplify right side
    780,057.90x = 765,338,246,429.90
  5. Step 5: Solve for x
    x = 765,338,246,429.90/780,057.90
  6. Step 6: Final answer
    x = 981,130.05

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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.