Home / 1,247,505,809.96-1,721,571,622.63-690,598,157.24

Finding the Fourth Proportional to 1,247,505,809.96, 1,721,571,622.63 and 690,598,157.24

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Solution

The fourth proportional to 1,247,505,809.96, 1,721,571,622.63 and 690,598,157.24 is: 953,032,988.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,505,809.96 : 1,721,571,622.63 = 690,598,157.24 : x
  2. Step 2: Convert to fraction form
    1,247,505,809.96/1,721,571,622.63 = 690,598,157.24/x
  3. Step 3: Cross multiply
    1,247,505,809.96x = 1,721,571,622.63 × 690,598,157.24
  4. Step 4: Simplify right side
    1,247,505,809.96x = 1,188,914,190,134,620,416
  5. Step 5: Solve for x
    x = 1,188,914,190,134,620,416/1,247,505,809.96
  6. Step 6: Final answer
    x = 953,032,988.42

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Double scale
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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.