Home / 831,712.61-1,147,764.63-449,739.39

Finding the Fourth Proportional to 831,712.61, 1,147,764.63 and 449,739.39

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Solution

The fourth proportional to 831,712.61, 1,147,764.63 and 449,739.39 is: 620,641.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,712.61 : 1,147,764.63 = 449,739.39 : x
  2. Step 2: Convert to fraction form
    831,712.61/1,147,764.63 = 449,739.39/x
  3. Step 3: Cross multiply
    831,712.61x = 1,147,764.63 × 449,739.39
  4. Step 4: Simplify right side
    831,712.61x = 516,194,964,094.24
  5. Step 5: Solve for x
    x = 516,194,964,094.24/831,712.61
  6. Step 6: Final answer
    x = 620,641.02

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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.