Home / 1,128,090.28-1,691,293.86-678,705.85

Finding the Fourth Proportional to 1,128,090.28, 1,691,293.86 and 678,705.85

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Solution

The fourth proportional to 1,128,090.28, 1,691,293.86 and 678,705.85 is: 1,017,552.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,090.28 : 1,691,293.86 = 678,705.85 : x
  2. Step 2: Convert to fraction form
    1,128,090.28/1,691,293.86 = 678,705.85/x
  3. Step 3: Cross multiply
    1,128,090.28x = 1,691,293.86 × 678,705.85
  4. Step 4: Simplify right side
    1,128,090.28x = 1,147,891,036,851.08
  5. Step 5: Solve for x
    x = 1,147,891,036,851.08/1,128,090.28
  6. Step 6: Final answer
    x = 1,017,552.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.