Home / 1,987,053.33-2,742,491.45-1,171,209.39

Finding the Fourth Proportional to 1,987,053.33, 2,742,491.45 and 1,171,209.39

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Solution

The fourth proportional to 1,987,053.33, 2,742,491.45 and 1,171,209.39 is: 1,616,479.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,053.33 : 2,742,491.45 = 1,171,209.39 : x
  2. Step 2: Convert to fraction form
    1,987,053.33/2,742,491.45 = 1,171,209.39/x
  3. Step 3: Cross multiply
    1,987,053.33x = 2,742,491.45 × 1,171,209.39
  4. Step 4: Simplify right side
    1,987,053.33x = 3,212,031,730,878.40
  5. Step 5: Solve for x
    x = 3,212,031,730,878.40/1,987,053.33
  6. Step 6: Final answer
    x = 1,616,479.88

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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.