Home / 1,586,987.18-2,190,057-861,841.16

Finding the Fourth Proportional to 1,586,987.18, 2,190,057 and 861,841.16

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Solution

The fourth proportional to 1,586,987.18, 2,190,057 and 861,841.16 is: 1,189,348.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586,987.18 : 2,190,057 = 861,841.16 : x
  2. Step 2: Convert to fraction form
    1,586,987.18/2,190,057 = 861,841.16/x
  3. Step 3: Cross multiply
    1,586,987.18x = 2,190,057 × 861,841.16
  4. Step 4: Simplify right side
    1,586,987.18x = 1,887,481,265,346.12
  5. Step 5: Solve for x
    x = 1,887,481,265,346.12/1,586,987.18
  6. Step 6: Final answer
    x = 1,189,348.78

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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.