Home / 831,404.73-1,247,130.33-270,439.23

Finding the Fourth Proportional to 831,404.73, 1,247,130.33 and 270,439.23

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Solution

The fourth proportional to 831,404.73, 1,247,130.33 and 270,439.23 is: 405,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,404.73 : 1,247,130.33 = 270,439.23 : x
  2. Step 2: Convert to fraction form
    831,404.73/1,247,130.33 = 270,439.23/x
  3. Step 3: Cross multiply
    831,404.73x = 1,247,130.33 × 270,439.23
  4. Step 4: Simplify right side
    831,404.73x = 337,272,966,154.85
  5. Step 5: Solve for x
    x = 337,272,966,154.85/831,404.73
  6. Step 6: Final answer
    x = 405,666.40

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Double scale
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1.5x scale

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.