Home / 861,311,617.96-1,188,453,245.88-484,909,672.36

Finding the Fourth Proportional to 861,311,617.96, 1,188,453,245.88 and 484,909,672.36

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Solution

The fourth proportional to 861,311,617.96, 1,188,453,245.88 and 484,909,672.36 is: 669,087,078.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,311,617.96 : 1,188,453,245.88 = 484,909,672.36 : x
  2. Step 2: Convert to fraction form
    861,311,617.96/1,188,453,245.88 = 484,909,672.36/x
  3. Step 3: Cross multiply
    861,311,617.96x = 1,188,453,245.88 × 484,909,672.36
  4. Step 4: Simplify right side
    861,311,617.96x = 576,292,474,074,849,408
  5. Step 5: Solve for x
    x = 576,292,474,074,849,408/861,311,617.96
  6. Step 6: Final answer
    x = 669,087,078.43

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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.