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Finding the Fourth Proportional to 652,505.51, 978,441.83 and 382,721.81

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Solution

The fourth proportional to 652,505.51, 978,441.83 and 382,721.81 is: 573,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,505.51 : 978,441.83 = 382,721.81 : x
  2. Step 2: Convert to fraction form
    652,505.51/978,441.83 = 382,721.81/x
  3. Step 3: Cross multiply
    652,505.51x = 978,441.83 × 382,721.81
  4. Step 4: Simplify right side
    652,505.51x = 374,471,021,351.49
  5. Step 5: Solve for x
    x = 374,471,021,351.49/652,505.51
  6. Step 6: Final answer
    x = 573,897.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.