Home / 515,655.86-773,521.04-215,834.76

Finding the Fourth Proportional to 515,655.86, 773,521.04 and 215,834.76

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Solution

The fourth proportional to 515,655.86, 773,521.04 and 215,834.76 is: 323,767.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,655.86 : 773,521.04 = 215,834.76 : x
  2. Step 2: Convert to fraction form
    515,655.86/773,521.04 = 215,834.76/x
  3. Step 3: Cross multiply
    515,655.86x = 773,521.04 × 215,834.76
  4. Step 4: Simplify right side
    515,655.86x = 166,952,728,562.94
  5. Step 5: Solve for x
    x = 166,952,728,562.94/515,655.86
  6. Step 6: Final answer
    x = 323,767.74

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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.