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Finding the Fourth Proportional to 545,862, 818,459.48 and 261,639.52

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Solution

The fourth proportional to 545,862, 818,459.48 and 261,639.52 is: 392,299.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,862 : 818,459.48 = 261,639.52 : x
  2. Step 2: Convert to fraction form
    545,862/818,459.48 = 261,639.52/x
  3. Step 3: Cross multiply
    545,862x = 818,459.48 × 261,639.52
  4. Step 4: Simplify right side
    545,862x = 214,141,345,486.65
  5. Step 5: Solve for x
    x = 214,141,345,486.65/545,862
  6. Step 6: Final answer
    x = 392,299.42

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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.