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Finding the Fourth Proportional to 394,081,887.60, 590,115,061.80 and 291,289,388.40

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Solution

The fourth proportional to 394,081,887.60, 590,115,061.80 and 291,289,388.40 is: 436,189,180.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,081,887.60 : 590,115,061.80 = 291,289,388.40 : x
  2. Step 2: Convert to fraction form
    394,081,887.60/590,115,061.80 = 291,289,388.40/x
  3. Step 3: Cross multiply
    394,081,887.60x = 590,115,061.80 × 291,289,388.40
  4. Step 4: Simplify right side
    394,081,887.60x = 171,894,255,437,350,176
  5. Step 5: Solve for x
    x = 171,894,255,437,350,176/394,081,887.60
  6. Step 6: Final answer
    x = 436,189,180.08

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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.