Home / 834,044,063.05-1,251,139,615.98-309,419,242.21

Finding the Fourth Proportional to 834,044,063.05, 1,251,139,615.98 and 309,419,242.21

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Solution

The fourth proportional to 834,044,063.05, 1,251,139,615.98 and 309,419,242.21 is: 464,156,138.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    834,044,063.05 : 1,251,139,615.98 = 309,419,242.21 : x
  2. Step 2: Convert to fraction form
    834,044,063.05/1,251,139,615.98 = 309,419,242.21/x
  3. Step 3: Cross multiply
    834,044,063.05x = 1,251,139,615.98 × 309,419,242.21
  4. Step 4: Simplify right side
    834,044,063.05x = 387,126,671,875,441,984
  5. Step 5: Solve for x
    x = 387,126,671,875,441,984/834,044,063.05
  6. Step 6: Final answer
    x = 464,156,138.78

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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.