Home / 399,446,540.80-599,169,811.20-338,980,364.80

Finding the Fourth Proportional to 399,446,540.80, 599,169,811.20 and 338,980,364.80

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Solution

The fourth proportional to 399,446,540.80, 599,169,811.20 and 338,980,364.80 is: 508,470,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,446,540.80 : 599,169,811.20 = 338,980,364.80 : x
  2. Step 2: Convert to fraction form
    399,446,540.80/599,169,811.20 = 338,980,364.80/x
  3. Step 3: Cross multiply
    399,446,540.80x = 599,169,811.20 × 338,980,364.80
  4. Step 4: Simplify right side
    399,446,540.80x = 203,106,801,177,723,136
  5. Step 5: Solve for x
    x = 203,106,801,177,723,136/399,446,540.80
  6. Step 6: Final answer
    x = 508,470,547.20

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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.