Home / 379,970,918.42-569,998,892.91-121,126,083.98

Finding the Fourth Proportional to 379,970,918.42, 569,998,892.91 and 121,126,083.98

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Solution

The fourth proportional to 379,970,918.42, 569,998,892.91 and 121,126,083.98 is: 181,702,678.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,970,918.42 : 569,998,892.91 = 121,126,083.98 : x
  2. Step 2: Convert to fraction form
    379,970,918.42/569,998,892.91 = 121,126,083.98/x
  3. Step 3: Cross multiply
    379,970,918.42x = 569,998,892.91 × 121,126,083.98
  4. Step 4: Simplify right side
    379,970,918.42x = 69,041,733,769,480,512
  5. Step 5: Solve for x
    x = 69,041,733,769,480,512/379,970,918.42
  6. Step 6: Final answer
    x = 181,702,678.87

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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.