Home / 1,556,127.72-2,147,992.02-911,756.52

Finding the Fourth Proportional to 1,556,127.72, 2,147,992.02 and 911,756.52

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Solution

The fourth proportional to 1,556,127.72, 2,147,992.02 and 911,756.52 is: 1,258,537.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556,127.72 : 2,147,992.02 = 911,756.52 : x
  2. Step 2: Convert to fraction form
    1,556,127.72/2,147,992.02 = 911,756.52/x
  3. Step 3: Cross multiply
    1,556,127.72x = 2,147,992.02 × 911,756.52
  4. Step 4: Simplify right side
    1,556,127.72x = 1,958,445,729,142.97
  5. Step 5: Solve for x
    x = 1,958,445,729,142.97/1,556,127.72
  6. Step 6: Final answer
    x = 1,258,537.91

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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.