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Finding the Fourth Proportional to 661,459.44, 992,167.20 and 287,482.80

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Solution

The fourth proportional to 661,459.44, 992,167.20 and 287,482.80 is: 431,214.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,459.44 : 992,167.20 = 287,482.80 : x
  2. Step 2: Convert to fraction form
    661,459.44/992,167.20 = 287,482.80/x
  3. Step 3: Cross multiply
    661,459.44x = 992,167.20 × 287,482.80
  4. Step 4: Simplify right side
    661,459.44x = 285,231,004,724.16
  5. Step 5: Solve for x
    x = 285,231,004,724.16/661,459.44
  6. Step 6: Final answer
    x = 431,214.66

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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.