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Finding the Fourth Proportional to 872,203.81, 1,308,813.32 and 366,728.17

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Solution

The fourth proportional to 872,203.81, 1,308,813.32 and 366,728.17 is: 550,305.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,203.81 : 1,308,813.32 = 366,728.17 : x
  2. Step 2: Convert to fraction form
    872,203.81/1,308,813.32 = 366,728.17/x
  3. Step 3: Cross multiply
    872,203.81x = 1,308,813.32 × 366,728.17
  4. Step 4: Simplify right side
    872,203.81x = 479,978,713,715.22
  5. Step 5: Solve for x
    x = 479,978,713,715.22/872,203.81
  6. Step 6: Final answer
    x = 550,305.68

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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.