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Finding the Fourth Proportional to 675,178.80, 931,611.96 and 373,314.48

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Solution

The fourth proportional to 675,178.80, 931,611.96 and 373,314.48 is: 515,099.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,178.80 : 931,611.96 = 373,314.48 : x
  2. Step 2: Convert to fraction form
    675,178.80/931,611.96 = 373,314.48/x
  3. Step 3: Cross multiply
    675,178.80x = 931,611.96 × 373,314.48
  4. Step 4: Simplify right side
    675,178.80x = 347,784,234,409.18
  5. Step 5: Solve for x
    x = 347,784,234,409.18/675,178.80
  6. Step 6: Final answer
    x = 515,099.46

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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.