Home / 1,072,589.80-1,607,860.70-398,490.60

Finding the Fourth Proportional to 1,072,589.80, 1,607,860.70 and 398,490.60

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Solution

The fourth proportional to 1,072,589.80, 1,607,860.70 and 398,490.60 is: 597,355.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,589.80 : 1,607,860.70 = 398,490.60 : x
  2. Step 2: Convert to fraction form
    1,072,589.80/1,607,860.70 = 398,490.60/x
  3. Step 3: Cross multiply
    1,072,589.80x = 1,607,860.70 × 398,490.60
  4. Step 4: Simplify right side
    1,072,589.80x = 640,717,375,059.42
  5. Step 5: Solve for x
    x = 640,717,375,059.42/1,072,589.80
  6. Step 6: Final answer
    x = 597,355.46

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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.