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Finding the Fourth Proportional to 553,614.55, 763,988.13 and 298,965.75

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Solution

The fourth proportional to 553,614.55, 763,988.13 and 298,965.75 is: 412,572.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,614.55 : 763,988.13 = 298,965.75 : x
  2. Step 2: Convert to fraction form
    553,614.55/763,988.13 = 298,965.75/x
  3. Step 3: Cross multiply
    553,614.55x = 763,988.13 × 298,965.75
  4. Step 4: Simplify right side
    553,614.55x = 228,406,284,276.55
  5. Step 5: Solve for x
    x = 228,406,284,276.55/553,614.55
  6. Step 6: Final answer
    x = 412,572.76

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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.