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Finding the Fourth Proportional to 7,668,279.60, 11,502,419.40 and 6,528,415.20

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Solution

The fourth proportional to 7,668,279.60, 11,502,419.40 and 6,528,415.20 is: 9,792,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,668,279.60 : 11,502,419.40 = 6,528,415.20 : x
  2. Step 2: Convert to fraction form
    7,668,279.60/11,502,419.40 = 6,528,415.20/x
  3. Step 3: Cross multiply
    7,668,279.60x = 11,502,419.40 × 6,528,415.20
  4. Step 4: Simplify right side
    7,668,279.60x = 75,092,569,647,734.89
  5. Step 5: Solve for x
    x = 75,092,569,647,734.89/7,668,279.60
  6. Step 6: Final answer
    x = 9,792,622.80

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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.