Home / 783,139.10-1,174,708.65-659,136.20

Finding the Fourth Proportional to 783,139.10, 1,174,708.65 and 659,136.20

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Solution

The fourth proportional to 783,139.10, 1,174,708.65 and 659,136.20 is: 988,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,139.10 : 1,174,708.65 = 659,136.20 : x
  2. Step 2: Convert to fraction form
    783,139.10/1,174,708.65 = 659,136.20/x
  3. Step 3: Cross multiply
    783,139.10x = 1,174,708.65 × 659,136.20
  4. Step 4: Simplify right side
    783,139.10x = 774,292,995,668.13
  5. Step 5: Solve for x
    x = 774,292,995,668.13/783,139.10
  6. Step 6: Final answer
    x = 988,704.30

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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.