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Finding the Fourth Proportional to 516,919.69, 775,277.31 and 491,286.32

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Solution

The fourth proportional to 516,919.69, 775,277.31 and 491,286.32 is: 736,832.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,919.69 : 775,277.31 = 491,286.32 : x
  2. Step 2: Convert to fraction form
    516,919.69/775,277.31 = 491,286.32/x
  3. Step 3: Cross multiply
    516,919.69x = 775,277.31 × 491,286.32
  4. Step 4: Simplify right side
    516,919.69x = 380,883,139,080.08
  5. Step 5: Solve for x
    x = 380,883,139,080.08/516,919.69
  6. Step 6: Final answer
    x = 736,832.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.