Home / 559,508,972.78-772,108,856.30-308,607,976.28

Finding the Fourth Proportional to 559,508,972.78, 772,108,856.30 and 308,607,976.28

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Solution

The fourth proportional to 559,508,972.78, 772,108,856.30 and 308,607,976.28 is: 425,871,546.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,508,972.78 : 772,108,856.30 = 308,607,976.28 : x
  2. Step 2: Convert to fraction form
    559,508,972.78/772,108,856.30 = 308,607,976.28/x
  3. Step 3: Cross multiply
    559,508,972.78x = 772,108,856.30 × 308,607,976.28
  4. Step 4: Simplify right side
    559,508,972.78x = 238,278,951,613,310,144
  5. Step 5: Solve for x
    x = 238,278,951,613,310,144/559,508,972.78
  6. Step 6: Final answer
    x = 425,871,546.67

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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.