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Finding the Fourth Proportional to 558,415.14, 770,612.31 and 303,765.72

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Solution

The fourth proportional to 558,415.14, 770,612.31 and 303,765.72 is: 419,196.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,415.14 : 770,612.31 = 303,765.72 : x
  2. Step 2: Convert to fraction form
    558,415.14/770,612.31 = 303,765.72/x
  3. Step 3: Cross multiply
    558,415.14x = 770,612.31 × 303,765.72
  4. Step 4: Simplify right side
    558,415.14x = 234,085,603,188.01
  5. Step 5: Solve for x
    x = 234,085,603,188.01/558,415.14
  6. Step 6: Final answer
    x = 419,196.38

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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.