Home / 857,078.40-1,285,617.60-718,147.20

Finding the Fourth Proportional to 857,078.40, 1,285,617.60 and 718,147.20

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Solution

The fourth proportional to 857,078.40, 1,285,617.60 and 718,147.20 is: 1,077,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,078.40 : 1,285,617.60 = 718,147.20 : x
  2. Step 2: Convert to fraction form
    857,078.40/1,285,617.60 = 718,147.20/x
  3. Step 3: Cross multiply
    857,078.40x = 1,285,617.60 × 718,147.20
  4. Step 4: Simplify right side
    857,078.40x = 923,262,679,710.72
  5. Step 5: Solve for x
    x = 923,262,679,710.72/857,078.40
  6. Step 6: Final answer
    x = 1,077,220.80

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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.