Home / 866,684.16-1,300,188.96-393,402.78

Finding the Fourth Proportional to 866,684.16, 1,300,188.96 and 393,402.78

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Solution

The fourth proportional to 866,684.16, 1,300,188.96 and 393,402.78 is: 590,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,684.16 : 1,300,188.96 = 393,402.78 : x
  2. Step 2: Convert to fraction form
    866,684.16/1,300,188.96 = 393,402.78/x
  3. Step 3: Cross multiply
    866,684.16x = 1,300,188.96 × 393,402.78
  4. Step 4: Simplify right side
    866,684.16x = 511,497,951,389.31
  5. Step 5: Solve for x
    x = 511,497,951,389.31/866,684.16
  6. Step 6: Final answer
    x = 590,178.03

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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.