Home / 1,185,987.08-1,636,642.22-642,118.47

Finding the Fourth Proportional to 1,185,987.08, 1,636,642.22 and 642,118.47

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Solution

The fourth proportional to 1,185,987.08, 1,636,642.22 and 642,118.47 is: 886,112.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,987.08 : 1,636,642.22 = 642,118.47 : x
  2. Step 2: Convert to fraction form
    1,185,987.08/1,636,642.22 = 642,118.47/x
  3. Step 3: Cross multiply
    1,185,987.08x = 1,636,642.22 × 642,118.47
  4. Step 4: Simplify right side
    1,185,987.08x = 1,050,918,195,033.21
  5. Step 5: Solve for x
    x = 1,050,918,195,033.21/1,185,987.08
  6. Step 6: Final answer
    x = 886,112.69

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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.