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Finding the Fourth Proportional to 404,326.80, 605,323.80 and 392,662.80

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Solution

The fourth proportional to 404,326.80, 605,323.80 and 392,662.80 is: 587,861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,326.80 : 605,323.80 = 392,662.80 : x
  2. Step 2: Convert to fraction form
    404,326.80/605,323.80 = 392,662.80/x
  3. Step 3: Cross multiply
    404,326.80x = 605,323.80 × 392,662.80
  4. Step 4: Simplify right side
    404,326.80x = 237,688,138,214.64
  5. Step 5: Solve for x
    x = 237,688,138,214.64/404,326.80
  6. Step 6: Final answer
    x = 587,861.45

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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.