Home / 813,816,036.46-1,220,782,889.91-340,639,191.52

Finding the Fourth Proportional to 813,816,036.46, 1,220,782,889.91 and 340,639,191.52

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Solution

The fourth proportional to 813,816,036.46, 1,220,782,889.91 and 340,639,191.52 is: 510,983,413.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,816,036.46 : 1,220,782,889.91 = 340,639,191.52 : x
  2. Step 2: Convert to fraction form
    813,816,036.46/1,220,782,889.91 = 340,639,191.52/x
  3. Step 3: Cross multiply
    813,816,036.46x = 1,220,782,889.91 × 340,639,191.52
  4. Step 4: Simplify right side
    813,816,036.46x = 415,846,496,638,940,800
  5. Step 5: Solve for x
    x = 415,846,496,638,940,800/813,816,036.46
  6. Step 6: Final answer
    x = 510,983,413.95

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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.