Home / 1,520,379,138.94-2,281,431,426.36-820,861,959.58

Finding the Fourth Proportional to 1,520,379,138.94, 2,281,431,426.36 and 820,861,959.58

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Solution

The fourth proportional to 1,520,379,138.94, 2,281,431,426.36 and 820,861,959.58 is: 1,231,758,726.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520,379,138.94 : 2,281,431,426.36 = 820,861,959.58 : x
  2. Step 2: Convert to fraction form
    1,520,379,138.94/2,281,431,426.36 = 820,861,959.58/x
  3. Step 3: Cross multiply
    1,520,379,138.94x = 2,281,431,426.36 × 820,861,959.58
  4. Step 4: Simplify right side
    1,520,379,138.94x = 1,872,740,271,289,264,384
  5. Step 5: Solve for x
    x = 1,872,740,271,289,264,384/1,520,379,138.94
  6. Step 6: Final answer
    x = 1,231,758,726.05

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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.