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Finding the Fourth Proportional to 654,562.80, 980,461.80 and 543,970.80

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Solution

The fourth proportional to 654,562.80, 980,461.80 and 543,970.80 is: 814,807.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,562.80 : 980,461.80 = 543,970.80 : x
  2. Step 2: Convert to fraction form
    654,562.80/980,461.80 = 543,970.80/x
  3. Step 3: Cross multiply
    654,562.80x = 980,461.80 × 543,970.80
  4. Step 4: Simplify right side
    654,562.80x = 533,342,589,715.44
  5. Step 5: Solve for x
    x = 533,342,589,715.44/654,562.80
  6. Step 6: Final answer
    x = 814,807.36

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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.