Home / 831,025.20-1,246,537.80-689,307.60

Finding the Fourth Proportional to 831,025.20, 1,246,537.80 and 689,307.60

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Solution

The fourth proportional to 831,025.20, 1,246,537.80 and 689,307.60 is: 1,033,961.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,025.20 : 1,246,537.80 = 689,307.60 : x
  2. Step 2: Convert to fraction form
    831,025.20/1,246,537.80 = 689,307.60/x
  3. Step 3: Cross multiply
    831,025.20x = 1,246,537.80 × 689,307.60
  4. Step 4: Simplify right side
    831,025.20x = 859,247,979,227.28
  5. Step 5: Solve for x
    x = 859,247,979,227.28/831,025.20
  6. Step 6: Final answer
    x = 1,033,961.40

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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.