Home / 1,211,274,000.30-1,816,911,000.45-393,468,969.90

Finding the Fourth Proportional to 1,211,274,000.30, 1,816,911,000.45 and 393,468,969.90

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Solution

The fourth proportional to 1,211,274,000.30, 1,816,911,000.45 and 393,468,969.90 is: 590,203,454.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,274,000.30 : 1,816,911,000.45 = 393,468,969.90 : x
  2. Step 2: Convert to fraction form
    1,211,274,000.30/1,816,911,000.45 = 393,468,969.90/x
  3. Step 3: Cross multiply
    1,211,274,000.30x = 1,816,911,000.45 × 393,468,969.90
  4. Step 4: Simplify right side
    1,211,274,000.30x = 714,898,099,747,039,872
  5. Step 5: Solve for x
    x = 714,898,099,747,039,872/1,211,274,000.30
  6. Step 6: Final answer
    x = 590,203,454.85

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Similar ratio
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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.