Home / 643,266.12-887,707.83-356,786.22

Finding the Fourth Proportional to 643,266.12, 887,707.83 and 356,786.22

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Solution

The fourth proportional to 643,266.12, 887,707.83 and 356,786.22 is: 492,365.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,266.12 : 887,707.83 = 356,786.22 : x
  2. Step 2: Convert to fraction form
    643,266.12/887,707.83 = 356,786.22/x
  3. Step 3: Cross multiply
    643,266.12x = 887,707.83 × 356,786.22
  4. Step 4: Simplify right side
    643,266.12x = 316,721,921,130.10
  5. Step 5: Solve for x
    x = 316,721,921,130.10/643,266.12
  6. Step 6: Final answer
    x = 492,365.31

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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.