Home / 831,777.20-1,247,665.80-270,868.40

Finding the Fourth Proportional to 831,777.20, 1,247,665.80 and 270,868.40

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Solution

The fourth proportional to 831,777.20, 1,247,665.80 and 270,868.40 is: 406,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,777.20 : 1,247,665.80 = 270,868.40 : x
  2. Step 2: Convert to fraction form
    831,777.20/1,247,665.80 = 270,868.40/x
  3. Step 3: Cross multiply
    831,777.20x = 1,247,665.80 × 270,868.40
  4. Step 4: Simplify right side
    831,777.20x = 337,953,238,980.72
  5. Step 5: Solve for x
    x = 337,953,238,980.72/831,777.20
  6. Step 6: Final answer
    x = 406,302.60

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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.