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Finding the Fourth Proportional to 520,075, 717,707.82 and 281,611

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Solution

The fourth proportional to 520,075, 717,707.82 and 281,611 is: 388,625.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,075 : 717,707.82 = 281,611 : x
  2. Step 2: Convert to fraction form
    520,075/717,707.82 = 281,611/x
  3. Step 3: Cross multiply
    520,075x = 717,707.82 × 281,611
  4. Step 4: Simplify right side
    520,075x = 202,114,416,898.02
  5. Step 5: Solve for x
    x = 202,114,416,898.02/520,075
  6. Step 6: Final answer
    x = 388,625.52

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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.