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Finding the Fourth Proportional to 718,464.44, 991,459.72 and 396,174.46

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Solution

The fourth proportional to 718,464.44, 991,459.72 and 396,174.46 is: 546,709.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,464.44 : 991,459.72 = 396,174.46 : x
  2. Step 2: Convert to fraction form
    718,464.44/991,459.72 = 396,174.46/x
  3. Step 3: Cross multiply
    718,464.44x = 991,459.72 × 396,174.46
  4. Step 4: Simplify right side
    718,464.44x = 392,791,019,182.75
  5. Step 5: Solve for x
    x = 392,791,019,182.75/718,464.44
  6. Step 6: Final answer
    x = 546,709.06

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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.