Home / 440,287,989.73-660,432,107.34-129,395,588.83

Finding the Fourth Proportional to 440,287,989.73, 660,432,107.34 and 129,395,588.83

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Solution

The fourth proportional to 440,287,989.73, 660,432,107.34 and 129,395,588.83 is: 194,093,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,287,989.73 : 660,432,107.34 = 129,395,588.83 : x
  2. Step 2: Convert to fraction form
    440,287,989.73/660,432,107.34 = 129,395,588.83/x
  3. Step 3: Cross multiply
    440,287,989.73x = 660,432,107.34 × 129,395,588.83
  4. Step 4: Simplify right side
    440,287,989.73x = 85,457,001,409,845,984
  5. Step 5: Solve for x
    x = 85,457,001,409,845,984/440,287,989.73
  6. Step 6: Final answer
    x = 194,093,419.32

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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.