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Finding the Fourth Proportional to 587,911.50, 811,464.78 and 361,425.78

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Solution

The fourth proportional to 587,911.50, 811,464.78 and 361,425.78 is: 498,857.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,911.50 : 811,464.78 = 361,425.78 : x
  2. Step 2: Convert to fraction form
    587,911.50/811,464.78 = 361,425.78/x
  3. Step 3: Cross multiply
    587,911.50x = 811,464.78 × 361,425.78
  4. Step 4: Simplify right side
    587,911.50x = 293,284,291,054.03
  5. Step 5: Solve for x
    x = 293,284,291,054.03/587,911.50
  6. Step 6: Final answer
    x = 498,857.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.