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Finding the Fourth Proportional to 640,969.84, 960,776.79 and 241,437.75

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Solution

The fourth proportional to 640,969.84, 960,776.79 and 241,437.75 is: 361,901.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,969.84 : 960,776.79 = 241,437.75 : x
  2. Step 2: Convert to fraction form
    640,969.84/960,776.79 = 241,437.75/x
  3. Step 3: Cross multiply
    640,969.84x = 960,776.79 × 241,437.75
  4. Step 4: Simplify right side
    640,969.84x = 231,967,786,429.82
  5. Step 5: Solve for x
    x = 231,967,786,429.82/640,969.84
  6. Step 6: Final answer
    x = 361,901.25

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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.