Home / 805,879,429.60-1,209,117,742.80-321,552,824.80

Finding the Fourth Proportional to 805,879,429.60, 1,209,117,742.80 and 321,552,824.80

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Solution

The fourth proportional to 805,879,429.60, 1,209,117,742.80 and 321,552,824.80 is: 482,448,380.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,879,429.60 : 1,209,117,742.80 = 321,552,824.80 : x
  2. Step 2: Convert to fraction form
    805,879,429.60/1,209,117,742.80 = 321,552,824.80/x
  3. Step 3: Cross multiply
    805,879,429.60x = 1,209,117,742.80 × 321,552,824.80
  4. Step 4: Simplify right side
    805,879,429.60x = 388,795,225,713,139,840
  5. Step 5: Solve for x
    x = 388,795,225,713,139,840/805,879,429.60
  6. Step 6: Final answer
    x = 482,448,380.53

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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.