Home / 485,331,947.60-727,997,921.40-194,243,997.20

Finding the Fourth Proportional to 485,331,947.60, 727,997,921.40 and 194,243,997.20

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Solution

The fourth proportional to 485,331,947.60, 727,997,921.40 and 194,243,997.20 is: 291,365,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,331,947.60 : 727,997,921.40 = 194,243,997.20 : x
  2. Step 2: Convert to fraction form
    485,331,947.60/727,997,921.40 = 194,243,997.20/x
  3. Step 3: Cross multiply
    485,331,947.60x = 727,997,921.40 × 194,243,997.20
  4. Step 4: Simplify right side
    485,331,947.60x = 141,409,226,206,027,408
  5. Step 5: Solve for x
    x = 141,409,226,206,027,408/485,331,947.60
  6. Step 6: Final answer
    x = 291,365,995.80

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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.