Home / 393,156,972.30-589,735,458.45-385,504,221.90

Finding the Fourth Proportional to 393,156,972.30, 589,735,458.45 and 385,504,221.90

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Solution

The fourth proportional to 393,156,972.30, 589,735,458.45 and 385,504,221.90 is: 578,256,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,156,972.30 : 589,735,458.45 = 385,504,221.90 : x
  2. Step 2: Convert to fraction form
    393,156,972.30/589,735,458.45 = 385,504,221.90/x
  3. Step 3: Cross multiply
    393,156,972.30x = 589,735,458.45 × 385,504,221.90
  4. Step 4: Simplify right side
    393,156,972.30x = 227,345,509,036,607,040
  5. Step 5: Solve for x
    x = 227,345,509,036,607,040/393,156,972.30
  6. Step 6: Final answer
    x = 578,256,332.85

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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.