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Finding the Fourth Proportional to 519,960.15, 779,423.54 and 361,856.45

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Solution

The fourth proportional to 519,960.15, 779,423.54 and 361,856.45 is: 542,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,960.15 : 779,423.54 = 361,856.45 : x
  2. Step 2: Convert to fraction form
    519,960.15/779,423.54 = 361,856.45/x
  3. Step 3: Cross multiply
    519,960.15x = 779,423.54 × 361,856.45
  4. Step 4: Simplify right side
    519,960.15x = 282,039,433,282.27
  5. Step 5: Solve for x
    x = 282,039,433,282.27/519,960.15
  6. Step 6: Final answer
    x = 542,425.10

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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.