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Finding the Fourth Proportional to 484,984,564.80, 727,722,568.80 and 212,358,004.80

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Solution

The fourth proportional to 484,984,564.80, 727,722,568.80 and 212,358,004.80 is: 318,644,600.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,984,564.80 : 727,722,568.80 = 212,358,004.80 : x
  2. Step 2: Convert to fraction form
    484,984,564.80/727,722,568.80 = 212,358,004.80/x
  3. Step 3: Cross multiply
    484,984,564.80x = 727,722,568.80 × 212,358,004.80
  4. Step 4: Simplify right side
    484,984,564.80x = 154,537,712,758,298,720
  5. Step 5: Solve for x
    x = 154,537,712,758,298,720/484,984,564.80
  6. Step 6: Final answer
    x = 318,644,600.21

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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.