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Finding the Fourth Proportional to 561,766,401.40, 775,238,909.36 and 310,889,048.44

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Solution

The fourth proportional to 561,766,401.40, 775,238,909.36 and 310,889,048.44 is: 429,027,592.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,766,401.40 : 775,238,909.36 = 310,889,048.44 : x
  2. Step 2: Convert to fraction form
    561,766,401.40/775,238,909.36 = 310,889,048.44/x
  3. Step 3: Cross multiply
    561,766,401.40x = 775,238,909.36 × 310,889,048.44
  4. Step 4: Simplify right side
    561,766,401.40x = 241,013,286,844,593,824
  5. Step 5: Solve for x
    x = 241,013,286,844,593,824/561,766,401.40
  6. Step 6: Final answer
    x = 429,027,592.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.