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Finding the Fourth Proportional to 545,384.40, 818,732.70 and 541,447.80

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Solution

The fourth proportional to 545,384.40, 818,732.70 and 541,447.80 is: 812,823.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,384.40 : 818,732.70 = 541,447.80 : x
  2. Step 2: Convert to fraction form
    545,384.40/818,732.70 = 541,447.80/x
  3. Step 3: Cross multiply
    545,384.40x = 818,732.70 × 541,447.80
  4. Step 4: Simplify right side
    545,384.40x = 443,301,019,203.06
  5. Step 5: Solve for x
    x = 443,301,019,203.06/545,384.40
  6. Step 6: Final answer
    x = 812,823.06

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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.