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Finding the Fourth Proportional to 529,476.95, 730,683.84 and 287,759.54

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Solution

The fourth proportional to 529,476.95, 730,683.84 and 287,759.54 is: 397,111.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,476.95 : 730,683.84 = 287,759.54 : x
  2. Step 2: Convert to fraction form
    529,476.95/730,683.84 = 287,759.54/x
  3. Step 3: Cross multiply
    529,476.95x = 730,683.84 × 287,759.54
  4. Step 4: Simplify right side
    529,476.95x = 210,261,242,860.90
  5. Step 5: Solve for x
    x = 210,261,242,860.90/529,476.95
  6. Step 6: Final answer
    x = 397,111.23

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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.