Home / 638,612,003.80-956,126,415.30-620,696,099.80

Finding the Fourth Proportional to 638,612,003.80, 956,126,415.30 and 620,696,099.80

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Solution

The fourth proportional to 638,612,003.80, 956,126,415.30 and 620,696,099.80 is: 929,302,821.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,612,003.80 : 956,126,415.30 = 620,696,099.80 : x
  2. Step 2: Convert to fraction form
    638,612,003.80/956,126,415.30 = 620,696,099.80/x
  3. Step 3: Cross multiply
    638,612,003.80x = 956,126,415.30 × 620,696,099.80
  4. Step 4: Simplify right side
    638,612,003.80x = 593,463,936,892,465,024
  5. Step 5: Solve for x
    x = 593,463,936,892,465,024/638,612,003.80
  6. Step 6: Final answer
    x = 929,302,821.37

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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.