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Finding the Fourth Proportional to 605,074.40, 907,611.60 and 406,008.80

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Solution

The fourth proportional to 605,074.40, 907,611.60 and 406,008.80 is: 609,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,074.40 : 907,611.60 = 406,008.80 : x
  2. Step 2: Convert to fraction form
    605,074.40/907,611.60 = 406,008.80/x
  3. Step 3: Cross multiply
    605,074.40x = 907,611.60 × 406,008.80
  4. Step 4: Simplify right side
    605,074.40x = 368,498,296,582.08
  5. Step 5: Solve for x
    x = 368,498,296,582.08/605,074.40
  6. Step 6: Final answer
    x = 609,013.20

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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.