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Finding the Fourth Proportional to 719,577.20, 993,076.44 and 397,316.72

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Solution

The fourth proportional to 719,577.20, 993,076.44 and 397,316.72 is: 548,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,577.20 : 993,076.44 = 397,316.72 : x
  2. Step 2: Convert to fraction form
    719,577.20/993,076.44 = 397,316.72/x
  3. Step 3: Cross multiply
    719,577.20x = 993,076.44 × 397,316.72
  4. Step 4: Simplify right side
    719,577.20x = 394,565,873,850.08
  5. Step 5: Solve for x
    x = 394,565,873,850.08/719,577.20
  6. Step 6: Final answer
    x = 548,330.15

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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.