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Finding the Fourth Proportional to 526,817.49, 727,009.42 and 285,101.81

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Solution

The fourth proportional to 526,817.49, 727,009.42 and 285,101.81 is: 393,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,817.49 : 727,009.42 = 285,101.81 : x
  2. Step 2: Convert to fraction form
    526,817.49/727,009.42 = 285,101.81/x
  3. Step 3: Cross multiply
    526,817.49x = 727,009.42 × 285,101.81
  4. Step 4: Simplify right side
    526,817.49x = 207,271,704,531.53
  5. Step 5: Solve for x
    x = 207,271,704,531.53/526,817.49
  6. Step 6: Final answer
    x = 393,441.20

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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.