Home / 1,185,407.25-1,635,863.99-641,543.57

Finding the Fourth Proportional to 1,185,407.25, 1,635,863.99 and 641,543.57

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Solution

The fourth proportional to 1,185,407.25, 1,635,863.99 and 641,543.57 is: 885,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,407.25 : 1,635,863.99 = 641,543.57 : x
  2. Step 2: Convert to fraction form
    1,185,407.25/1,635,863.99 = 641,543.57/x
  3. Step 3: Cross multiply
    1,185,407.25x = 1,635,863.99 × 641,543.57
  4. Step 4: Simplify right side
    1,185,407.25x = 1,049,478,024,179.04
  5. Step 5: Solve for x
    x = 1,049,478,024,179.04/1,185,407.25
  6. Step 6: Final answer
    x = 885,331.20

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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.