Home / 820,711,874.34-1,231,143,490.76-268,017,199.30

Finding the Fourth Proportional to 820,711,874.34, 1,231,143,490.76 and 268,017,199.30

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Solution

The fourth proportional to 820,711,874.34, 1,231,143,490.76 and 268,017,199.30 is: 402,050,513.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,711,874.34 : 1,231,143,490.76 = 268,017,199.30 : x
  2. Step 2: Convert to fraction form
    820,711,874.34/1,231,143,490.76 = 268,017,199.30/x
  3. Step 3: Cross multiply
    820,711,874.34x = 1,231,143,490.76 × 268,017,199.30
  4. Step 4: Simplify right side
    820,711,874.34x = 329,967,630,325,502,720
  5. Step 5: Solve for x
    x = 329,967,630,325,502,720/820,711,874.34
  6. Step 6: Final answer
    x = 402,050,513.27

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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.