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Finding the Fourth Proportional to 561,649,908.30, 842,474,862.45 and 255,539,892.30

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Solution

The fourth proportional to 561,649,908.30, 842,474,862.45 and 255,539,892.30 is: 383,309,838.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,649,908.30 : 842,474,862.45 = 255,539,892.30 : x
  2. Step 2: Convert to fraction form
    561,649,908.30/842,474,862.45 = 255,539,892.30/x
  3. Step 3: Cross multiply
    561,649,908.30x = 842,474,862.45 × 255,539,892.30
  4. Step 4: Simplify right side
    561,649,908.30x = 215,285,935,615,930,336
  5. Step 5: Solve for x
    x = 215,285,935,615,930,336/561,649,908.30
  6. Step 6: Final answer
    x = 383,309,838.45

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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.