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Finding the Fourth Proportional to 496,771.20, 684,238.40 and 381,830.08

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Solution

The fourth proportional to 496,771.20, 684,238.40 and 381,830.08 is: 525,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,771.20 : 684,238.40 = 381,830.08 : x
  2. Step 2: Convert to fraction form
    496,771.20/684,238.40 = 381,830.08/x
  3. Step 3: Cross multiply
    496,771.20x = 684,238.40 × 381,830.08
  4. Step 4: Simplify right side
    496,771.20x = 261,262,803,011.07
  5. Step 5: Solve for x
    x = 261,262,803,011.07/496,771.20
  6. Step 6: Final answer
    x = 525,921.80

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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.