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Finding the Fourth Proportional to 553,958.91, 764,463.65 and 299,310.03

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Solution

The fourth proportional to 553,958.91, 764,463.65 and 299,310.03 is: 413,048.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,958.91 : 764,463.65 = 299,310.03 : x
  2. Step 2: Convert to fraction form
    553,958.91/764,463.65 = 299,310.03/x
  3. Step 3: Cross multiply
    553,958.91x = 764,463.65 × 299,310.03
  4. Step 4: Simplify right side
    553,958.91x = 228,811,636,518.86
  5. Step 5: Solve for x
    x = 228,811,636,518.86/553,958.91
  6. Step 6: Final answer
    x = 413,048.03

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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.