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Finding the Fourth Proportional to 628,069.92, 866,961.96 and 373,420.50

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Solution

The fourth proportional to 628,069.92, 866,961.96 and 373,420.50 is: 515,454.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,069.92 : 866,961.96 = 373,420.50 : x
  2. Step 2: Convert to fraction form
    628,069.92/866,961.96 = 373,420.50/x
  3. Step 3: Cross multiply
    628,069.92x = 866,961.96 × 373,420.50
  4. Step 4: Simplify right side
    628,069.92x = 323,741,368,584.18
  5. Step 5: Solve for x
    x = 323,741,368,584.18/628,069.92
  6. Step 6: Final answer
    x = 515,454.34

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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.