Home / 831,405.90-1,247,476.05-404,705.10

Finding the Fourth Proportional to 831,405.90, 1,247,476.05 and 404,705.10

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Solution

The fourth proportional to 831,405.90, 1,247,476.05 and 404,705.10 is: 607,236.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,405.90 : 1,247,476.05 = 404,705.10 : x
  2. Step 2: Convert to fraction form
    831,405.90/1,247,476.05 = 404,705.10/x
  3. Step 3: Cross multiply
    831,405.90x = 1,247,476.05 × 404,705.10
  4. Step 4: Simplify right side
    831,405.90x = 504,859,919,562.86
  5. Step 5: Solve for x
    x = 504,859,919,562.86/831,405.90
  6. Step 6: Final answer
    x = 607,236.39

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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.