Home / 639,026.51-881,825.80-348,620.79

Finding the Fourth Proportional to 639,026.51, 881,825.80 and 348,620.79

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Solution

The fourth proportional to 639,026.51, 881,825.80 and 348,620.79 is: 481,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,026.51 : 881,825.80 = 348,620.79 : x
  2. Step 2: Convert to fraction form
    639,026.51/881,825.80 = 348,620.79/x
  3. Step 3: Cross multiply
    639,026.51x = 881,825.80 × 348,620.79
  4. Step 4: Simplify right side
    639,026.51x = 307,422,802,629.25
  5. Step 5: Solve for x
    x = 307,422,802,629.25/639,026.51
  6. Step 6: Final answer
    x = 481,079.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.