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Finding the Fourth Proportional to 8,332,556.40, 12,477,839.40 and 5,477,209.20

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Solution

The fourth proportional to 8,332,556.40, 12,477,839.40 and 5,477,209.20 is: 8,202,013.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,332,556.40 : 12,477,839.40 = 5,477,209.20 : x
  2. Step 2: Convert to fraction form
    8,332,556.40/12,477,839.40 = 5,477,209.20/x
  3. Step 3: Cross multiply
    8,332,556.40x = 12,477,839.40 × 5,477,209.20
  4. Step 4: Simplify right side
    8,332,556.40x = 68,343,736,757,802.48
  5. Step 5: Solve for x
    x = 68,343,736,757,802.48/8,332,556.40
  6. Step 6: Final answer
    x = 8,202,013.10

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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.