Home / 643,422.84-887,924.57-356,942.93

Finding the Fourth Proportional to 643,422.84, 887,924.57 and 356,942.93

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Solution

The fourth proportional to 643,422.84, 887,924.57 and 356,942.93 is: 492,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,422.84 : 887,924.57 = 356,942.93 : x
  2. Step 2: Convert to fraction form
    643,422.84/887,924.57 = 356,942.93/x
  3. Step 3: Cross multiply
    643,422.84x = 887,924.57 × 356,942.93
  4. Step 4: Simplify right side
    643,422.84x = 316,938,392,748.99
  5. Step 5: Solve for x
    x = 316,938,392,748.99/643,422.84
  6. Step 6: Final answer
    x = 492,581.82

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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.