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Finding the Fourth Proportional to 579,369.96, 869,120.55 and 519,839.82

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Solution

The fourth proportional to 579,369.96, 869,120.55 and 519,839.82 is: 779,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,369.96 : 869,120.55 = 519,839.82 : x
  2. Step 2: Convert to fraction form
    579,369.96/869,120.55 = 519,839.82/x
  3. Step 3: Cross multiply
    579,369.96x = 869,120.55 × 519,839.82
  4. Step 4: Simplify right side
    579,369.96x = 451,803,470,270.30
  5. Step 5: Solve for x
    x = 451,803,470,270.30/579,369.96
  6. Step 6: Final answer
    x = 779,818.60

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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.