Home / 1,987,413.17-2,742,714.27-1,128,053.39

Finding the Fourth Proportional to 1,987,413.17, 2,742,714.27 and 1,128,053.39

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Solution

The fourth proportional to 1,987,413.17, 2,742,714.27 and 1,128,053.39 is: 1,556,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,413.17 : 2,742,714.27 = 1,128,053.39 : x
  2. Step 2: Convert to fraction form
    1,987,413.17/2,742,714.27 = 1,128,053.39/x
  3. Step 3: Cross multiply
    1,987,413.17x = 2,742,714.27 × 1,128,053.39
  4. Step 4: Simplify right side
    1,987,413.17x = 3,093,928,116,361.30
  5. Step 5: Solve for x
    x = 3,093,928,116,361.30/1,987,413.17
  6. Step 6: Final answer
    x = 1,556,761.41

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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.