Home / 1,071,189.45-1,478,287.62-641,387.43

Finding the Fourth Proportional to 1,071,189.45, 1,478,287.62 and 641,387.43

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Solution

The fourth proportional to 1,071,189.45, 1,478,287.62 and 641,387.43 is: 885,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,189.45 : 1,478,287.62 = 641,387.43 : x
  2. Step 2: Convert to fraction form
    1,071,189.45/1,478,287.62 = 641,387.43/x
  3. Step 3: Cross multiply
    1,071,189.45x = 1,478,287.62 × 641,387.43
  4. Step 4: Simplify right side
    1,071,189.45x = 948,155,097,392.62
  5. Step 5: Solve for x
    x = 948,155,097,392.62/1,071,189.45
  6. Step 6: Final answer
    x = 885,142.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.