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Finding the Fourth Proportional to 6,668,988.56, 9,976,080.24 and 5,323,778.64

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Solution

The fourth proportional to 6,668,988.56, 9,976,080.24 and 5,323,778.64 is: 7,963,792.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,668,988.56 : 9,976,080.24 = 5,323,778.64 : x
  2. Step 2: Convert to fraction form
    6,668,988.56/9,976,080.24 = 5,323,778.64/x
  3. Step 3: Cross multiply
    6,668,988.56x = 9,976,080.24 × 5,323,778.64
  4. Step 4: Simplify right side
    6,668,988.56x = 53,110,442,892,638.07
  5. Step 5: Solve for x
    x = 53,110,442,892,638.07/6,668,988.56
  6. Step 6: Final answer
    x = 7,963,792.77

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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.