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Finding the Fourth Proportional to 516,693.28, 774,109.91 and 486,298.38

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Solution

The fourth proportional to 516,693.28, 774,109.91 and 486,298.38 is: 728,572.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,693.28 : 774,109.91 = 486,298.38 : x
  2. Step 2: Convert to fraction form
    516,693.28/774,109.91 = 486,298.38/x
  3. Step 3: Cross multiply
    516,693.28x = 774,109.91 × 486,298.38
  4. Step 4: Simplify right side
    516,693.28x = 376,448,399,293.60
  5. Step 5: Solve for x
    x = 376,448,399,293.60/516,693.28
  6. Step 6: Final answer
    x = 728,572.28

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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.