Home / 831,000.80-1,245,626.40-325,366.40

Finding the Fourth Proportional to 831,000.80, 1,245,626.40 and 325,366.40

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Solution

The fourth proportional to 831,000.80, 1,245,626.40 and 325,366.40 is: 487,707.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,000.80 : 1,245,626.40 = 325,366.40 : x
  2. Step 2: Convert to fraction form
    831,000.80/1,245,626.40 = 325,366.40/x
  3. Step 3: Cross multiply
    831,000.80x = 1,245,626.40 × 325,366.40
  4. Step 4: Simplify right side
    831,000.80x = 405,284,977,512.96
  5. Step 5: Solve for x
    x = 405,284,977,512.96/831,000.80
  6. Step 6: Final answer
    x = 487,707.08

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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.