Home / 1,192,309,917.78-1,788,731,618.40-363,328,439.85

Finding the Fourth Proportional to 1,192,309,917.78, 1,788,731,618.40 and 363,328,439.85

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Solution

The fourth proportional to 1,192,309,917.78, 1,788,731,618.40 and 363,328,439.85 is: 545,073,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,309,917.78 : 1,788,731,618.40 = 363,328,439.85 : x
  2. Step 2: Convert to fraction form
    1,192,309,917.78/1,788,731,618.40 = 363,328,439.85/x
  3. Step 3: Cross multiply
    1,192,309,917.78x = 1,788,731,618.40 × 363,328,439.85
  4. Step 4: Simplify right side
    1,192,309,917.78x = 649,897,068,223,637,632
  5. Step 5: Solve for x
    x = 649,897,068,223,637,632/1,192,309,917.78
  6. Step 6: Final answer
    x = 545,073,943.05

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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.