Home / 551,581.28-761,099.31-309,817.54

Finding the Fourth Proportional to 551,581.28, 761,099.31 and 309,817.54

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Solution

The fourth proportional to 551,581.28, 761,099.31 and 309,817.54 is: 427,501.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,581.28 : 761,099.31 = 309,817.54 : x
  2. Step 2: Convert to fraction form
    551,581.28/761,099.31 = 309,817.54/x
  3. Step 3: Cross multiply
    551,581.28x = 761,099.31 × 309,817.54
  4. Step 4: Simplify right side
    551,581.28x = 235,801,916,871.27
  5. Step 5: Solve for x
    x = 235,801,916,871.27/551,581.28
  6. Step 6: Final answer
    x = 427,501.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.