Home / 877,090.80-1,315,247.40-403,921.20

Finding the Fourth Proportional to 877,090.80, 1,315,247.40 and 403,921.20

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Solution

The fourth proportional to 877,090.80, 1,315,247.40 and 403,921.20 is: 605,702.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,090.80 : 1,315,247.40 = 403,921.20 : x
  2. Step 2: Convert to fraction form
    877,090.80/1,315,247.40 = 403,921.20/x
  3. Step 3: Cross multiply
    877,090.80x = 1,315,247.40 × 403,921.20
  4. Step 4: Simplify right side
    877,090.80x = 531,256,308,104.88
  5. Step 5: Solve for x
    x = 531,256,308,104.88/877,090.80
  6. Step 6: Final answer
    x = 605,702.75

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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.