Home / 820,711,880.34-1,231,143,499.76-268,017,205.30

Finding the Fourth Proportional to 820,711,880.34, 1,231,143,499.76 and 268,017,205.30

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Solution

The fourth proportional to 820,711,880.34, 1,231,143,499.76 and 268,017,205.30 is: 402,050,522.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,711,880.34 : 1,231,143,499.76 = 268,017,205.30 : x
  2. Step 2: Convert to fraction form
    820,711,880.34/1,231,143,499.76 = 268,017,205.30/x
  3. Step 3: Cross multiply
    820,711,880.34x = 1,231,143,499.76 × 268,017,205.30
  4. Step 4: Simplify right side
    820,711,880.34x = 329,967,640,128,936,448
  5. Step 5: Solve for x
    x = 329,967,640,128,936,448/820,711,880.34
  6. Step 6: Final answer
    x = 402,050,522.28

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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.