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Finding the Fourth Proportional to 653,912.70, 980,869.05 and 338,466.30

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Solution

The fourth proportional to 653,912.70, 980,869.05 and 338,466.30 is: 507,699.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,912.70 : 980,869.05 = 338,466.30 : x
  2. Step 2: Convert to fraction form
    653,912.70/980,869.05 = 338,466.30/x
  3. Step 3: Cross multiply
    653,912.70x = 980,869.05 × 338,466.30
  4. Step 4: Simplify right side
    653,912.70x = 331,991,118,138.02
  5. Step 5: Solve for x
    x = 331,991,118,138.02/653,912.70
  6. Step 6: Final answer
    x = 507,699.45

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Similar ratio
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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.