Home / 711,129.57-1,066,695.38-290,405.44

Finding the Fourth Proportional to 711,129.57, 1,066,695.38 and 290,405.44

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Solution

The fourth proportional to 711,129.57, 1,066,695.38 and 290,405.44 is: 435,608.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,129.57 : 1,066,695.38 = 290,405.44 : x
  2. Step 2: Convert to fraction form
    711,129.57/1,066,695.38 = 290,405.44/x
  3. Step 3: Cross multiply
    711,129.57x = 1,066,695.38 × 290,405.44
  4. Step 4: Simplify right side
    711,129.57x = 309,774,141,174.87
  5. Step 5: Solve for x
    x = 309,774,141,174.87/711,129.57
  6. Step 6: Final answer
    x = 435,608.58

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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.