Home / 420,022,764.60-630,029,999.70-132,808,428.60

Finding the Fourth Proportional to 420,022,764.60, 630,029,999.70 and 132,808,428.60

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Solution

The fourth proportional to 420,022,764.60, 630,029,999.70 and 132,808,428.60 is: 199,211,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,022,764.60 : 630,029,999.70 = 132,808,428.60 : x
  2. Step 2: Convert to fraction form
    420,022,764.60/630,029,999.70 = 132,808,428.60/x
  3. Step 3: Cross multiply
    420,022,764.60x = 630,029,999.70 × 132,808,428.60
  4. Step 4: Simplify right side
    420,022,764.60x = 83,673,294,231,015,472
  5. Step 5: Solve for x
    x = 83,673,294,231,015,472/420,022,764.60
  6. Step 6: Final answer
    x = 199,211,331.58

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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.