Home / 419,904,430.40-629,856,645.60-391,206,616.40

Finding the Fourth Proportional to 419,904,430.40, 629,856,645.60 and 391,206,616.40

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Solution

The fourth proportional to 419,904,430.40, 629,856,645.60 and 391,206,616.40 is: 586,809,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,430.40 : 629,856,645.60 = 391,206,616.40 : x
  2. Step 2: Convert to fraction form
    419,904,430.40/629,856,645.60 = 391,206,616.40/x
  3. Step 3: Cross multiply
    419,904,430.40x = 629,856,645.60 × 391,206,616.40
  4. Step 4: Simplify right side
    419,904,430.40x = 246,404,087,142,229,952
  5. Step 5: Solve for x
    x = 246,404,087,142,229,952/419,904,430.40
  6. Step 6: Final answer
    x = 586,809,924.60

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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.