Home / 715,904,469.64-987,834,337.79-402,578,173.77

Finding the Fourth Proportional to 715,904,469.64, 987,834,337.79 and 402,578,173.77

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Solution

The fourth proportional to 715,904,469.64, 987,834,337.79 and 402,578,173.77 is: 555,493,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,904,469.64 : 987,834,337.79 = 402,578,173.77 : x
  2. Step 2: Convert to fraction form
    715,904,469.64/987,834,337.79 = 402,578,173.77/x
  3. Step 3: Cross multiply
    715,904,469.64x = 987,834,337.79 × 402,578,173.77
  4. Step 4: Simplify right side
    715,904,469.64x = 397,680,543,694,795,456
  5. Step 5: Solve for x
    x = 397,680,543,694,795,456/715,904,469.64
  6. Step 6: Final answer
    x = 555,493,869.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.