Home / 756,142,679.60-1,133,766,121.80-393,345,623.60

Finding the Fourth Proportional to 756,142,679.60, 1,133,766,121.80 and 393,345,623.60

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Solution

The fourth proportional to 756,142,679.60, 1,133,766,121.80 and 393,345,623.60 is: 589,785,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,142,679.60 : 1,133,766,121.80 = 393,345,623.60 : x
  2. Step 2: Convert to fraction form
    756,142,679.60/1,133,766,121.80 = 393,345,623.60/x
  3. Step 3: Cross multiply
    756,142,679.60x = 1,133,766,121.80 × 393,345,623.60
  4. Step 4: Simplify right side
    756,142,679.60x = 445,961,942,195,974,592
  5. Step 5: Solve for x
    x = 445,961,942,195,974,592/756,142,679.60
  6. Step 6: Final answer
    x = 589,785,438.95

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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.