Home / 1,247,505,803.39-1,721,571,613.57-690,598,150.67

Finding the Fourth Proportional to 1,247,505,803.39, 1,721,571,613.57 and 690,598,150.67

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Solution

The fourth proportional to 1,247,505,803.39, 1,721,571,613.57 and 690,598,150.67 is: 953,032,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,505,803.39 : 1,721,571,613.57 = 690,598,150.67 : x
  2. Step 2: Convert to fraction form
    1,247,505,803.39/1,721,571,613.57 = 690,598,150.67/x
  3. Step 3: Cross multiply
    1,247,505,803.39x = 1,721,571,613.57 × 690,598,150.67
  4. Step 4: Simplify right side
    1,247,505,803.39x = 1,188,914,172,582,542,592
  5. Step 5: Solve for x
    x = 1,188,914,172,582,542,592/1,247,505,803.39
  6. Step 6: Final answer
    x = 953,032,979.37

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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.