Home / 790,705.23-1,091,168.62-428,121.60

Finding the Fourth Proportional to 790,705.23, 1,091,168.62 and 428,121.60

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Solution

The fourth proportional to 790,705.23, 1,091,168.62 and 428,121.60 is: 590,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,705.23 : 1,091,168.62 = 428,121.60 : x
  2. Step 2: Convert to fraction form
    790,705.23/1,091,168.62 = 428,121.60/x
  3. Step 3: Cross multiply
    790,705.23x = 1,091,168.62 × 428,121.60
  4. Step 4: Simplify right side
    790,705.23x = 467,152,855,464.19
  5. Step 5: Solve for x
    x = 467,152,855,464.19/790,705.23
  6. Step 6: Final answer
    x = 590,805.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.