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Finding the Fourth Proportional to 649,692.80, 973,502.40 and 543,939.20

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Solution

The fourth proportional to 649,692.80, 973,502.40 and 543,939.20 is: 815,040.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,692.80 : 973,502.40 = 543,939.20 : x
  2. Step 2: Convert to fraction form
    649,692.80/973,502.40 = 543,939.20/x
  3. Step 3: Cross multiply
    649,692.80x = 973,502.40 × 543,939.20
  4. Step 4: Simplify right side
    649,692.80x = 529,526,116,654.08
  5. Step 5: Solve for x
    x = 529,526,116,654.08/649,692.80
  6. Step 6: Final answer
    x = 815,040.76

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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.