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Finding the Fourth Proportional to 529,361.33, 730,519.56 and 287,646.80

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Solution

The fourth proportional to 529,361.33, 730,519.56 and 287,646.80 is: 396,953.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,361.33 : 730,519.56 = 287,646.80 : x
  2. Step 2: Convert to fraction form
    529,361.33/730,519.56 = 287,646.80/x
  3. Step 3: Cross multiply
    529,361.33x = 730,519.56 × 287,646.80
  4. Step 4: Simplify right side
    529,361.33x = 210,131,610,118.81
  5. Step 5: Solve for x
    x = 210,131,610,118.81/529,361.33
  6. Step 6: Final answer
    x = 396,953.08

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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.