Home / 856,431,132.56-1,181,933,441.80-485,156,214.80

Finding the Fourth Proportional to 856,431,132.56, 1,181,933,441.80 and 485,156,214.80

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Solution

The fourth proportional to 856,431,132.56, 1,181,933,441.80 and 485,156,214.80 is: 669,548,703.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,431,132.56 : 1,181,933,441.80 = 485,156,214.80 : x
  2. Step 2: Convert to fraction form
    856,431,132.56/1,181,933,441.80 = 485,156,214.80/x
  3. Step 3: Cross multiply
    856,431,132.56x = 1,181,933,441.80 × 485,156,214.80
  4. Step 4: Simplify right side
    856,431,132.56x = 573,422,354,769,224,064
  5. Step 5: Solve for x
    x = 573,422,354,769,224,064/856,431,132.56
  6. Step 6: Final answer
    x = 669,548,703.88

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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.