Home / 1,321,019,862.30-1,981,529,793.45-400,894,724.70

Finding the Fourth Proportional to 1,321,019,862.30, 1,981,529,793.45 and 400,894,724.70

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Solution

The fourth proportional to 1,321,019,862.30, 1,981,529,793.45 and 400,894,724.70 is: 601,342,087.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,019,862.30 : 1,981,529,793.45 = 400,894,724.70 : x
  2. Step 2: Convert to fraction form
    1,321,019,862.30/1,981,529,793.45 = 400,894,724.70/x
  3. Step 3: Cross multiply
    1,321,019,862.30x = 1,981,529,793.45 × 400,894,724.70
  4. Step 4: Simplify right side
    1,321,019,862.30x = 794,384,841,029,985,664
  5. Step 5: Solve for x
    x = 794,384,841,029,985,664/1,321,019,862.30
  6. Step 6: Final answer
    x = 601,342,087.05

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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.