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Finding the Fourth Proportional to 720,250.81, 993,944.06 and 397,958.61

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Solution

The fourth proportional to 720,250.81, 993,944.06 and 397,958.61 is: 549,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,250.81 : 993,944.06 = 397,958.61 : x
  2. Step 2: Convert to fraction form
    720,250.81/993,944.06 = 397,958.61/x
  3. Step 3: Cross multiply
    720,250.81x = 993,944.06 × 397,958.61
  4. Step 4: Simplify right side
    720,250.81x = 395,548,596,535.36
  5. Step 5: Solve for x
    x = 395,548,596,535.36/720,250.81
  6. Step 6: Final answer
    x = 549,181.74

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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.