Home / 717,956.12-990,786.21-395,677.82

Finding the Fourth Proportional to 717,956.12, 990,786.21 and 395,677.82

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Solution

The fourth proportional to 717,956.12, 990,786.21 and 395,677.82 is: 546,039.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,956.12 : 990,786.21 = 395,677.82 : x
  2. Step 2: Convert to fraction form
    717,956.12/990,786.21 = 395,677.82/x
  3. Step 3: Cross multiply
    717,956.12x = 990,786.21 × 395,677.82
  4. Step 4: Simplify right side
    717,956.12x = 392,032,127,658.86
  5. Step 5: Solve for x
    x = 392,032,127,658.86/717,956.12
  6. Step 6: Final answer
    x = 546,039.12

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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.