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Finding the Fourth Proportional to 3,982,318.40, 5,973,466.08 and 990,502.40

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Solution

The fourth proportional to 3,982,318.40, 5,973,466.08 and 990,502.40 is: 1,485,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982,318.40 : 5,973,466.08 = 990,502.40 : x
  2. Step 2: Convert to fraction form
    3,982,318.40/5,973,466.08 = 990,502.40/x
  3. Step 3: Cross multiply
    3,982,318.40x = 5,973,466.08 × 990,502.40
  4. Step 4: Simplify right side
    3,982,318.40x = 5,916,732,488,558.59
  5. Step 5: Solve for x
    x = 5,916,732,488,558.59/3,982,318.40
  6. Step 6: Final answer
    x = 1,485,750.73

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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.