Home / 419,905,342.40-629,858,013.60-288,391,409.60

Finding the Fourth Proportional to 419,905,342.40, 629,858,013.60 and 288,391,409.60

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Solution

The fourth proportional to 419,905,342.40, 629,858,013.60 and 288,391,409.60 is: 432,587,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,342.40 : 629,858,013.60 = 288,391,409.60 : x
  2. Step 2: Convert to fraction form
    419,905,342.40/629,858,013.60 = 288,391,409.60/x
  3. Step 3: Cross multiply
    419,905,342.40x = 629,858,013.60 × 288,391,409.60
  4. Step 4: Simplify right side
    419,905,342.40x = 181,645,640,389,960,000
  5. Step 5: Solve for x
    x = 181,645,640,389,960,000/419,905,342.40
  6. Step 6: Final answer
    x = 432,587,114.40

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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.