Home / 979,819,479.20-1,469,729,218.80-809,758,359.20

Finding the Fourth Proportional to 979,819,479.20, 1,469,729,218.80 and 809,758,359.20

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Solution

The fourth proportional to 979,819,479.20, 1,469,729,218.80 and 809,758,359.20 is: 1,214,637,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,819,479.20 : 1,469,729,218.80 = 809,758,359.20 : x
  2. Step 2: Convert to fraction form
    979,819,479.20/1,469,729,218.80 = 809,758,359.20/x
  3. Step 3: Cross multiply
    979,819,479.20x = 1,469,729,218.80 × 809,758,359.20
  4. Step 4: Simplify right side
    979,819,479.20x = 1,190,125,520,683,785,728
  5. Step 5: Solve for x
    x = 1,190,125,520,683,785,728/979,819,479.20
  6. Step 6: Final answer
    x = 1,214,637,538.80

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1.5x scale

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.