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Finding the Fourth Proportional to 618,865,420.84, 928,305,422.30 and 245,464,361

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Solution

The fourth proportional to 618,865,420.84, 928,305,422.30 and 245,464,361 is: 368,199,433.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,865,420.84 : 928,305,422.30 = 245,464,361 : x
  2. Step 2: Convert to fraction form
    618,865,420.84/928,305,422.30 = 245,464,361/x
  3. Step 3: Cross multiply
    618,865,420.84x = 928,305,422.30 × 245,464,361
  4. Step 4: Simplify right side
    618,865,420.84x = 227,865,897,297,704,640
  5. Step 5: Solve for x
    x = 227,865,897,297,704,640/618,865,420.84
  6. Step 6: Final answer
    x = 368,199,433.39

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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.