Home / 419,905,328.40-629,857,992.60-288,391,395.60

Finding the Fourth Proportional to 419,905,328.40, 629,857,992.60 and 288,391,395.60

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Solution

The fourth proportional to 419,905,328.40, 629,857,992.60 and 288,391,395.60 is: 432,587,093.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,328.40 : 629,857,992.60 = 288,391,395.60 : x
  2. Step 2: Convert to fraction form
    419,905,328.40/629,857,992.60 = 288,391,395.60/x
  3. Step 3: Cross multiply
    419,905,328.40x = 629,857,992.60 × 288,391,395.60
  4. Step 4: Simplify right side
    419,905,328.40x = 181,645,625,515,728,480
  5. Step 5: Solve for x
    x = 181,645,625,515,728,480/419,905,328.40
  6. Step 6: Final answer
    x = 432,587,093.40

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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.