Home / 780,057.90-1,170,086.85-661,959.90

Finding the Fourth Proportional to 780,057.90, 1,170,086.85 and 661,959.90

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Solution

The fourth proportional to 780,057.90, 1,170,086.85 and 661,959.90 is: 992,939.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,057.90 : 1,170,086.85 = 661,959.90 : x
  2. Step 2: Convert to fraction form
    780,057.90/1,170,086.85 = 661,959.90/x
  3. Step 3: Cross multiply
    780,057.90x = 1,170,086.85 × 661,959.90
  4. Step 4: Simplify right side
    780,057.90x = 774,550,574,217.32
  5. Step 5: Solve for x
    x = 774,550,574,217.32/780,057.90
  6. Step 6: Final answer
    x = 992,939.85

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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.