Home / 393,660,401.20-590,490,601.80-291,623,729.20

Finding the Fourth Proportional to 393,660,401.20, 590,490,601.80 and 291,623,729.20

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Solution

The fourth proportional to 393,660,401.20, 590,490,601.80 and 291,623,729.20 is: 437,435,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,660,401.20 : 590,490,601.80 = 291,623,729.20 : x
  2. Step 2: Convert to fraction form
    393,660,401.20/590,490,601.80 = 291,623,729.20/x
  3. Step 3: Cross multiply
    393,660,401.20x = 590,490,601.80 × 291,623,729.20
  4. Step 4: Simplify right side
    393,660,401.20x = 172,201,071,354,468,224
  5. Step 5: Solve for x
    x = 172,201,071,354,468,224/393,660,401.20
  6. Step 6: Final answer
    x = 437,435,593.80

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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.