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Finding the Fourth Proportional to 819,692.70, 1,229,539.05 and 552,003.90

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Solution

The fourth proportional to 819,692.70, 1,229,539.05 and 552,003.90 is: 828,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,692.70 : 1,229,539.05 = 552,003.90 : x
  2. Step 2: Convert to fraction form
    819,692.70/1,229,539.05 = 552,003.90/x
  3. Step 3: Cross multiply
    819,692.70x = 1,229,539.05 × 552,003.90
  4. Step 4: Simplify right side
    819,692.70x = 678,710,350,802.30
  5. Step 5: Solve for x
    x = 678,710,350,802.30/819,692.70
  6. Step 6: Final answer
    x = 828,005.85

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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.