Home / 393,185,668.60-589,026,477.30-211,372,420.60

Finding the Fourth Proportional to 393,185,668.60, 589,026,477.30 and 211,372,420.60

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Solution

The fourth proportional to 393,185,668.60, 589,026,477.30 and 211,372,420.60 is: 316,654,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,185,668.60 : 589,026,477.30 = 211,372,420.60 : x
  2. Step 2: Convert to fraction form
    393,185,668.60/589,026,477.30 = 211,372,420.60/x
  3. Step 3: Cross multiply
    393,185,668.60x = 589,026,477.30 × 211,372,420.60
  4. Step 4: Simplify right side
    393,185,668.60x = 124,503,952,304,391,936
  5. Step 5: Solve for x
    x = 124,503,952,304,391,936/393,185,668.60
  6. Step 6: Final answer
    x = 316,654,349.96

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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.