Home / 715,736.72-1,075,025.87-428,102.48

Finding the Fourth Proportional to 715,736.72, 1,075,025.87 and 428,102.48

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Solution

The fourth proportional to 715,736.72, 1,075,025.87 and 428,102.48 is: 643,003.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,736.72 : 1,075,025.87 = 428,102.48 : x
  2. Step 2: Convert to fraction form
    715,736.72/1,075,025.87 = 428,102.48/x
  3. Step 3: Cross multiply
    715,736.72x = 1,075,025.87 × 428,102.48
  4. Step 4: Simplify right side
    715,736.72x = 460,221,233,495.52
  5. Step 5: Solve for x
    x = 460,221,233,495.52/715,736.72
  6. Step 6: Final answer
    x = 643,003.53

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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.