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Finding the Fourth Proportional to 559,645.80, 839,468.70 and 403,348.20

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Solution

The fourth proportional to 559,645.80, 839,468.70 and 403,348.20 is: 605,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,645.80 : 839,468.70 = 403,348.20 : x
  2. Step 2: Convert to fraction form
    559,645.80/839,468.70 = 403,348.20/x
  3. Step 3: Cross multiply
    559,645.80x = 839,468.70 × 403,348.20
  4. Step 4: Simplify right side
    559,645.80x = 338,598,189,101.34
  5. Step 5: Solve for x
    x = 338,598,189,101.34/559,645.80
  6. Step 6: Final answer
    x = 605,022.30

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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.