Home / 831,357.86-1,147,273.34-449,384.64

Finding the Fourth Proportional to 831,357.86, 1,147,273.34 and 449,384.64

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Solution

The fourth proportional to 831,357.86, 1,147,273.34 and 449,384.64 is: 620,150.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,357.86 : 1,147,273.34 = 449,384.64 : x
  2. Step 2: Convert to fraction form
    831,357.86/1,147,273.34 = 449,384.64/x
  3. Step 3: Cross multiply
    831,357.86x = 1,147,273.34 × 449,384.64
  4. Step 4: Simplify right side
    831,357.86x = 515,567,016,877.50
  5. Step 5: Solve for x
    x = 515,567,016,877.50/831,357.86
  6. Step 6: Final answer
    x = 620,150.53

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.