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Finding the Fourth Proportional to 628,636.80, 941,572.80 and 545,692.80

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Solution

The fourth proportional to 628,636.80, 941,572.80 and 545,692.80 is: 817,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,636.80 : 941,572.80 = 545,692.80 : x
  2. Step 2: Convert to fraction form
    628,636.80/941,572.80 = 545,692.80/x
  3. Step 3: Cross multiply
    628,636.80x = 941,572.80 × 545,692.80
  4. Step 4: Simplify right side
    628,636.80x = 513,809,497,635.84
  5. Step 5: Solve for x
    x = 513,809,497,635.84/628,636.80
  6. Step 6: Final answer
    x = 817,339.20

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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.