Home / 556,691,178.12-768,141,578.34-321,763,754.76

Finding the Fourth Proportional to 556,691,178.12, 768,141,578.34 and 321,763,754.76

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Solution

The fourth proportional to 556,691,178.12, 768,141,578.34 and 321,763,754.76 is: 443,980,663.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,691,178.12 : 768,141,578.34 = 321,763,754.76 : x
  2. Step 2: Convert to fraction form
    556,691,178.12/768,141,578.34 = 321,763,754.76/x
  3. Step 3: Cross multiply
    556,691,178.12x = 768,141,578.34 × 321,763,754.76
  4. Step 4: Simplify right side
    556,691,178.12x = 247,160,118,433,951,104
  5. Step 5: Solve for x
    x = 247,160,118,433,951,104/556,691,178.12
  6. Step 6: Final answer
    x = 443,980,663.15

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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.