Home / 1,290,221.60-1,934,676.30-757,905.80

Finding the Fourth Proportional to 1,290,221.60, 1,934,676.30 and 757,905.80

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Solution

The fourth proportional to 1,290,221.60, 1,934,676.30 and 757,905.80 is: 1,136,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,221.60 : 1,934,676.30 = 757,905.80 : x
  2. Step 2: Convert to fraction form
    1,290,221.60/1,934,676.30 = 757,905.80/x
  3. Step 3: Cross multiply
    1,290,221.60x = 1,934,676.30 × 757,905.80
  4. Step 4: Simplify right side
    1,290,221.60x = 1,466,302,388,892.54
  5. Step 5: Solve for x
    x = 1,466,302,388,892.54/1,290,221.60
  6. Step 6: Final answer
    x = 1,136,473.29

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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.