Home / 820,711,876.34-1,231,143,493.76-268,017,201.30

Finding the Fourth Proportional to 820,711,876.34, 1,231,143,493.76 and 268,017,201.30

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Solution

The fourth proportional to 820,711,876.34, 1,231,143,493.76 and 268,017,201.30 is: 402,050,516.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,711,876.34 : 1,231,143,493.76 = 268,017,201.30 : x
  2. Step 2: Convert to fraction form
    820,711,876.34/1,231,143,493.76 = 268,017,201.30/x
  3. Step 3: Cross multiply
    820,711,876.34x = 1,231,143,493.76 × 268,017,201.30
  4. Step 4: Simplify right side
    820,711,876.34x = 329,967,633,596,259,200
  5. Step 5: Solve for x
    x = 329,967,633,596,259,200/820,711,876.34
  6. Step 6: Final answer
    x = 402,050,516.28

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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.