Home / 538,968.51-807,566.09-427,365.63

Finding the Fourth Proportional to 538,968.51, 807,566.09 and 427,365.63

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Solution

The fourth proportional to 538,968.51, 807,566.09 and 427,365.63 is: 640,345.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,968.51 : 807,566.09 = 427,365.63 : x
  2. Step 2: Convert to fraction form
    538,968.51/807,566.09 = 427,365.63/x
  3. Step 3: Cross multiply
    538,968.51x = 807,566.09 × 427,365.63
  4. Step 4: Simplify right side
    538,968.51x = 345,125,988,682.66
  5. Step 5: Solve for x
    x = 345,125,988,682.66/538,968.51
  6. Step 6: Final answer
    x = 640,345.37

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1.5x scale

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.