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Finding the Fourth Proportional to 545,385.40, 818,734.20 and 541,448.80

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Solution

The fourth proportional to 545,385.40, 818,734.20 and 541,448.80 is: 812,824.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,385.40 : 818,734.20 = 541,448.80 : x
  2. Step 2: Convert to fraction form
    545,385.40/818,734.20 = 541,448.80/x
  3. Step 3: Cross multiply
    545,385.40x = 818,734.20 × 541,448.80
  4. Step 4: Simplify right side
    545,385.40x = 443,302,650,108.96
  5. Step 5: Solve for x
    x = 443,302,650,108.96/545,385.40
  6. Step 6: Final answer
    x = 812,824.56

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1.5x scale

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.