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Finding the Fourth Proportional to 539,905.80, 808,692.30 and 469,921.80

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Solution

The fourth proportional to 539,905.80, 808,692.30 and 469,921.80 is: 703,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,905.80 : 808,692.30 = 469,921.80 : x
  2. Step 2: Convert to fraction form
    539,905.80/808,692.30 = 469,921.80/x
  3. Step 3: Cross multiply
    539,905.80x = 808,692.30 × 469,921.80
  4. Step 4: Simplify right side
    539,905.80x = 380,022,141,262.14
  5. Step 5: Solve for x
    x = 380,022,141,262.14/539,905.80
  6. Step 6: Final answer
    x = 703,867.49

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1.5x scale

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.