Home / 981,191,914.48-1,471,991,000.28-398,926,259.20

Finding the Fourth Proportional to 981,191,914.48, 1,471,991,000.28 and 398,926,259.20

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Solution

The fourth proportional to 981,191,914.48, 1,471,991,000.28 and 398,926,259.20 is: 598,471,975.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,191,914.48 : 1,471,991,000.28 = 398,926,259.20 : x
  2. Step 2: Convert to fraction form
    981,191,914.48/1,471,991,000.28 = 398,926,259.20/x
  3. Step 3: Cross multiply
    981,191,914.48x = 1,471,991,000.28 × 398,926,259.20
  4. Step 4: Simplify right side
    981,191,914.48x = 587,215,863,317,766,528
  5. Step 5: Solve for x
    x = 587,215,863,317,766,528/981,191,914.48
  6. Step 6: Final answer
    x = 598,471,975.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.