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Finding the Fourth Proportional to 6,690,978.66, 9,233,615.58 and 3,790,307.50

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Solution

The fourth proportional to 6,690,978.66, 9,233,615.58 and 3,790,307.50 is: 5,230,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690,978.66 : 9,233,615.58 = 3,790,307.50 : x
  2. Step 2: Convert to fraction form
    6,690,978.66/9,233,615.58 = 3,790,307.50/x
  3. Step 3: Cross multiply
    6,690,978.66x = 9,233,615.58 × 3,790,307.50
  4. Step 4: Simplify right side
    6,690,978.66x = 34,998,242,384,990.85
  5. Step 5: Solve for x
    x = 34,998,242,384,990.85/6,690,978.66
  6. Step 6: Final answer
    x = 5,230,661.19

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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.