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Finding the Fourth Proportional to 412,614,410.10, 618,921,615.15 and 412,614,410.10

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Solution

The fourth proportional to 412,614,410.10, 618,921,615.15 and 412,614,410.10 is: 618,921,615.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,614,410.10 : 618,921,615.15 = 412,614,410.10 : x
  2. Step 2: Convert to fraction form
    412,614,410.10/618,921,615.15 = 412,614,410.10/x
  3. Step 3: Cross multiply
    412,614,410.10x = 618,921,615.15 × 412,614,410.10
  4. Step 4: Simplify right side
    412,614,410.10x = 255,375,977,133,256,480
  5. Step 5: Solve for x
    x = 255,375,977,133,256,480/412,614,410.10
  6. Step 6: Final answer
    x = 618,921,615.15

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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.