Home / 1,107,622,140.72-1,528,989,198.36-690,140,691.56

Finding the Fourth Proportional to 1,107,622,140.72, 1,528,989,198.36 and 690,140,691.56

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Solution

The fourth proportional to 1,107,622,140.72, 1,528,989,198.36 and 690,140,691.56 is: 952,687,404.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,622,140.72 : 1,528,989,198.36 = 690,140,691.56 : x
  2. Step 2: Convert to fraction form
    1,107,622,140.72/1,528,989,198.36 = 690,140,691.56/x
  3. Step 3: Cross multiply
    1,107,622,140.72x = 1,528,989,198.36 × 690,140,691.56
  4. Step 4: Simplify right side
    1,107,622,140.72x = 1,055,217,662,743,940,224
  5. Step 5: Solve for x
    x = 1,055,217,662,743,940,224/1,107,622,140.72
  6. Step 6: Final answer
    x = 952,687,404.80

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.