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Finding the Fourth Proportional to 717,995.24, 990,830.18 and 395,704.64

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Solution

The fourth proportional to 717,995.24, 990,830.18 and 395,704.64 is: 546,070.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,995.24 : 990,830.18 = 395,704.64 : x
  2. Step 2: Convert to fraction form
    717,995.24/990,830.18 = 395,704.64/x
  3. Step 3: Cross multiply
    717,995.24x = 990,830.18 × 395,704.64
  4. Step 4: Simplify right side
    717,995.24x = 392,076,092,745.36
  5. Step 5: Solve for x
    x = 392,076,092,745.36/717,995.24
  6. Step 6: Final answer
    x = 546,070.61

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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.