Home / 643,046.04-887,448.15-356,592.78

Finding the Fourth Proportional to 643,046.04, 887,448.15 and 356,592.78

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Solution

The fourth proportional to 643,046.04, 887,448.15 and 356,592.78 is: 492,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,046.04 : 887,448.15 = 356,592.78 : x
  2. Step 2: Convert to fraction form
    643,046.04/887,448.15 = 356,592.78/x
  3. Step 3: Cross multiply
    643,046.04x = 887,448.15 × 356,592.78
  4. Step 4: Simplify right side
    643,046.04x = 316,457,602,914.36
  5. Step 5: Solve for x
    x = 316,457,602,914.36/643,046.04
  6. Step 6: Final answer
    x = 492,122.78

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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.