Home / 831,533.60-1,247,329.20-262,920.80

Finding the Fourth Proportional to 831,533.60, 1,247,329.20 and 262,920.80

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Solution

The fourth proportional to 831,533.60, 1,247,329.20 and 262,920.80 is: 394,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,533.60 : 1,247,329.20 = 262,920.80 : x
  2. Step 2: Convert to fraction form
    831,533.60/1,247,329.20 = 262,920.80/x
  3. Step 3: Cross multiply
    831,533.60x = 1,247,329.20 × 262,920.80
  4. Step 4: Simplify right side
    831,533.60x = 327,948,791,127.36
  5. Step 5: Solve for x
    x = 327,948,791,127.36/831,533.60
  6. Step 6: Final answer
    x = 394,390.31

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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.