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Finding the Fourth Proportional to 553,484.40, 830,489.04 and 329,287.74

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Solution

The fourth proportional to 553,484.40, 830,489.04 and 329,287.74 is: 494,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,484.40 : 830,489.04 = 329,287.74 : x
  2. Step 2: Convert to fraction form
    553,484.40/830,489.04 = 329,287.74/x
  3. Step 3: Cross multiply
    553,484.40x = 830,489.04 × 329,287.74
  4. Step 4: Simplify right side
    553,484.40x = 273,469,853,277.49
  5. Step 5: Solve for x
    x = 273,469,853,277.49/553,484.40
  6. Step 6: Final answer
    x = 494,087.74

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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.