Home / 672,128.19-1,005,823.04-419,527.26

Finding the Fourth Proportional to 672,128.19, 1,005,823.04 and 419,527.26

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Solution

The fourth proportional to 672,128.19, 1,005,823.04 and 419,527.26 is: 627,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,128.19 : 1,005,823.04 = 419,527.26 : x
  2. Step 2: Convert to fraction form
    672,128.19/1,005,823.04 = 419,527.26/x
  3. Step 3: Cross multiply
    672,128.19x = 1,005,823.04 × 419,527.26
  4. Step 4: Simplify right side
    672,128.19x = 421,970,181,918.43
  5. Step 5: Solve for x
    x = 421,970,181,918.43/672,128.19
  6. Step 6: Final answer
    x = 627,812.06

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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.