Home / 1,587,220.70-2,190,370.82-862,080.51

Finding the Fourth Proportional to 1,587,220.70, 2,190,370.82 and 862,080.51

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Solution

The fourth proportional to 1,587,220.70, 2,190,370.82 and 862,080.51 is: 1,189,674.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587,220.70 : 2,190,370.82 = 862,080.51 : x
  2. Step 2: Convert to fraction form
    1,587,220.70/2,190,370.82 = 862,080.51/x
  3. Step 3: Cross multiply
    1,587,220.70x = 2,190,370.82 × 862,080.51
  4. Step 4: Simplify right side
    1,587,220.70x = 1,888,275,997,498.21
  5. Step 5: Solve for x
    x = 1,888,275,997,498.21/1,587,220.70
  6. Step 6: Final answer
    x = 1,189,674.51

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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.