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Finding the Fourth Proportional to 528,798.33, 729,741.71 and 287,080.56

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Solution

The fourth proportional to 528,798.33, 729,741.71 and 287,080.56 is: 396,171.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,798.33 : 729,741.71 = 287,080.56 : x
  2. Step 2: Convert to fraction form
    528,798.33/729,741.71 = 287,080.56/x
  3. Step 3: Cross multiply
    528,798.33x = 729,741.71 × 287,080.56
  4. Step 4: Simplify right side
    528,798.33x = 209,494,657,326.76
  5. Step 5: Solve for x
    x = 209,494,657,326.76/528,798.33
  6. Step 6: Final answer
    x = 396,171.18

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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.