Home / 857,090.40-1,285,635.60-718,159.20

Finding the Fourth Proportional to 857,090.40, 1,285,635.60 and 718,159.20

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Solution

The fourth proportional to 857,090.40, 1,285,635.60 and 718,159.20 is: 1,077,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,090.40 : 1,285,635.60 = 718,159.20 : x
  2. Step 2: Convert to fraction form
    857,090.40/1,285,635.60 = 718,159.20/x
  3. Step 3: Cross multiply
    857,090.40x = 1,285,635.60 × 718,159.20
  4. Step 4: Simplify right side
    857,090.40x = 923,291,033,987.52
  5. Step 5: Solve for x
    x = 923,291,033,987.52/857,090.40
  6. Step 6: Final answer
    x = 1,077,238.80

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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.