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Finding the Fourth Proportional to 407,864.40, 611,796.60 and 404,911.95

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Solution

The fourth proportional to 407,864.40, 611,796.60 and 404,911.95 is: 607,367.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,864.40 : 611,796.60 = 404,911.95 : x
  2. Step 2: Convert to fraction form
    407,864.40/611,796.60 = 404,911.95/x
  3. Step 3: Cross multiply
    407,864.40x = 611,796.60 × 404,911.95
  4. Step 4: Simplify right side
    407,864.40x = 247,723,754,309.37
  5. Step 5: Solve for x
    x = 247,723,754,309.37/407,864.40
  6. Step 6: Final answer
    x = 607,367.93

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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.