Home / 831,432.15-1,147,378.05-449,458.92

Finding the Fourth Proportional to 831,432.15, 1,147,378.05 and 449,458.92

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Solution

The fourth proportional to 831,432.15, 1,147,378.05 and 449,458.92 is: 620,254.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,432.15 : 1,147,378.05 = 449,458.92 : x
  2. Step 2: Convert to fraction form
    831,432.15/1,147,378.05 = 449,458.92/x
  3. Step 3: Cross multiply
    831,432.15x = 1,147,378.05 × 449,458.92
  4. Step 4: Simplify right side
    831,432.15x = 515,699,299,184.71
  5. Step 5: Solve for x
    x = 515,699,299,184.71/831,432.15
  6. Step 6: Final answer
    x = 620,254.22

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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.