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Finding the Fourth Proportional to 528,838.75, 729,797.48 and 290,374.75

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Solution

The fourth proportional to 528,838.75, 729,797.48 and 290,374.75 is: 400,717.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,838.75 : 729,797.48 = 290,374.75 : x
  2. Step 2: Convert to fraction form
    528,838.75/729,797.48 = 290,374.75/x
  3. Step 3: Cross multiply
    528,838.75x = 729,797.48 × 290,374.75
  4. Step 4: Simplify right side
    528,838.75x = 211,914,760,805.63
  5. Step 5: Solve for x
    x = 211,914,760,805.63/528,838.75
  6. Step 6: Final answer
    x = 400,717.16

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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.