Home / 820,711,881.34-1,231,143,501.26-268,017,206.30

Finding the Fourth Proportional to 820,711,881.34, 1,231,143,501.26 and 268,017,206.30

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Solution

The fourth proportional to 820,711,881.34, 1,231,143,501.26 and 268,017,206.30 is: 402,050,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,711,881.34 : 1,231,143,501.26 = 268,017,206.30 : x
  2. Step 2: Convert to fraction form
    820,711,881.34/1,231,143,501.26 = 268,017,206.30/x
  3. Step 3: Cross multiply
    820,711,881.34x = 1,231,143,501.26 × 268,017,206.30
  4. Step 4: Simplify right side
    820,711,881.34x = 329,967,641,762,105,728
  5. Step 5: Solve for x
    x = 329,967,641,762,105,728/820,711,881.34
  6. Step 6: Final answer
    x = 402,050,523.78

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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.