Home / 1,211,976,478.80-1,817,700,834.78-326,641,174.92

Finding the Fourth Proportional to 1,211,976,478.80, 1,817,700,834.78 and 326,641,174.92

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Solution

The fourth proportional to 1,211,976,478.80, 1,817,700,834.78 and 326,641,174.92 is: 489,890,642.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,976,478.80 : 1,817,700,834.78 = 326,641,174.92 : x
  2. Step 2: Convert to fraction form
    1,211,976,478.80/1,817,700,834.78 = 326,641,174.92/x
  3. Step 3: Cross multiply
    1,211,976,478.80x = 1,817,700,834.78 × 326,641,174.92
  4. Step 4: Simplify right side
    1,211,976,478.80x = 593,735,936,325,603,968
  5. Step 5: Solve for x
    x = 593,735,936,325,603,968/1,211,976,478.80
  6. Step 6: Final answer
    x = 489,890,642.86

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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.