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Finding the Fourth Proportional to 545,439.61, 818,509.74 and 264,803.77

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Solution

The fourth proportional to 545,439.61, 818,509.74 and 264,803.77 is: 397,375.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,439.61 : 818,509.74 = 264,803.77 : x
  2. Step 2: Convert to fraction form
    545,439.61/818,509.74 = 264,803.77/x
  3. Step 3: Cross multiply
    545,439.61x = 818,509.74 × 264,803.77
  4. Step 4: Simplify right side
    545,439.61x = 216,744,464,933.72
  5. Step 5: Solve for x
    x = 216,744,464,933.72/545,439.61
  6. Step 6: Final answer
    x = 397,375.73

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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.