Home / 643,141.46-887,537.26-356,688.02

Finding the Fourth Proportional to 643,141.46, 887,537.26 and 356,688.02

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Solution

The fourth proportional to 643,141.46, 887,537.26 and 356,688.02 is: 492,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,141.46 : 887,537.26 = 356,688.02 : x
  2. Step 2: Convert to fraction form
    643,141.46/887,537.26 = 356,688.02/x
  3. Step 3: Cross multiply
    643,141.46x = 887,537.26 × 356,688.02
  4. Step 4: Simplify right side
    643,141.46x = 316,573,907,945.63
  5. Step 5: Solve for x
    x = 316,573,907,945.63/643,141.46
  6. Step 6: Final answer
    x = 492,230.60

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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.