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Finding the Fourth Proportional to 528,798.58, 729,750.53 and 287,080.97

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Solution

The fourth proportional to 528,798.58, 729,750.53 and 287,080.97 is: 396,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,798.58 : 729,750.53 = 287,080.97 : x
  2. Step 2: Convert to fraction form
    528,798.58/729,750.53 = 287,080.97/x
  3. Step 3: Cross multiply
    528,798.58x = 729,750.53 × 287,080.97
  4. Step 4: Simplify right side
    528,798.58x = 209,497,490,010.41
  5. Step 5: Solve for x
    x = 209,497,490,010.41/528,798.58
  6. Step 6: Final answer
    x = 396,176.35

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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.