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Finding the Fourth Proportional to 559,644.80, 839,467.20 and 403,347.20

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Solution

The fourth proportional to 559,644.80, 839,467.20 and 403,347.20 is: 605,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,644.80 : 839,467.20 = 403,347.20 : x
  2. Step 2: Convert to fraction form
    559,644.80/839,467.20 = 403,347.20/x
  3. Step 3: Cross multiply
    559,644.80x = 839,467.20 × 403,347.20
  4. Step 4: Simplify right side
    559,644.80x = 338,596,744,611.84
  5. Step 5: Solve for x
    x = 338,596,744,611.84/559,644.80
  6. Step 6: Final answer
    x = 605,020.80

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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.