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Finding the Fourth Proportional to 548,636.80, 822,955.20 and 545,137.60

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Solution

The fourth proportional to 548,636.80, 822,955.20 and 545,137.60 is: 817,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,636.80 : 822,955.20 = 545,137.60 : x
  2. Step 2: Convert to fraction form
    548,636.80/822,955.20 = 545,137.60/x
  3. Step 3: Cross multiply
    548,636.80x = 822,955.20 × 545,137.60
  4. Step 4: Simplify right side
    548,636.80x = 448,623,822,635.52
  5. Step 5: Solve for x
    x = 448,623,822,635.52/548,636.80
  6. Step 6: Final answer
    x = 817,706.40

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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.