Home / 643,277.96-887,724.08-356,800.10

Finding the Fourth Proportional to 643,277.96, 887,724.08 and 356,800.10

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Solution

The fourth proportional to 643,277.96, 887,724.08 and 356,800.10 is: 492,384.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,277.96 : 887,724.08 = 356,800.10 : x
  2. Step 2: Convert to fraction form
    643,277.96/887,724.08 = 356,800.10/x
  3. Step 3: Cross multiply
    643,277.96x = 887,724.08 × 356,800.10
  4. Step 4: Simplify right side
    643,277.96x = 316,740,040,516.41
  5. Step 5: Solve for x
    x = 316,740,040,516.41/643,277.96
  6. Step 6: Final answer
    x = 492,384.41

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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.