Home / 711,120.88-1,066,682.36-290,396.80

Finding the Fourth Proportional to 711,120.88, 1,066,682.36 and 290,396.80

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Solution

The fourth proportional to 711,120.88, 1,066,682.36 and 290,396.80 is: 435,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,120.88 : 1,066,682.36 = 290,396.80 : x
  2. Step 2: Convert to fraction form
    711,120.88/1,066,682.36 = 290,396.80/x
  3. Step 3: Cross multiply
    711,120.88x = 1,066,682.36 × 290,396.80
  4. Step 4: Simplify right side
    711,120.88x = 309,761,143,960.45
  5. Step 5: Solve for x
    x = 309,761,143,960.45/711,120.88
  6. Step 6: Final answer
    x = 435,595.62

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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.