Home / 643,275.74-887,826.81-356,888.09

Finding the Fourth Proportional to 643,275.74, 887,826.81 and 356,888.09

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Solution

The fourth proportional to 643,275.74, 887,826.81 and 356,888.09 is: 492,564.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,275.74 : 887,826.81 = 356,888.09 : x
  2. Step 2: Convert to fraction form
    643,275.74/887,826.81 = 356,888.09/x
  3. Step 3: Cross multiply
    643,275.74x = 887,826.81 × 356,888.09
  4. Step 4: Simplify right side
    643,275.74x = 316,854,810,032.56
  5. Step 5: Solve for x
    x = 316,854,810,032.56/643,275.74
  6. Step 6: Final answer
    x = 492,564.53

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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.