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Finding the Fourth Proportional to 717,036, 1,075,554 and 218,400

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Solution

The fourth proportional to 717,036, 1,075,554 and 218,400 is: 327,600

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,036 : 1,075,554 = 218,400 : x
  2. Step 2: Convert to fraction form
    717,036/1,075,554 = 218,400/x
  3. Step 3: Cross multiply
    717,036x = 1,075,554 × 218,400
  4. Step 4: Simplify right side
    717,036x = 234,900,993,600
  5. Step 5: Solve for x
    x = 234,900,993,600/717,036
  6. Step 6: Final answer
    x = 327,600

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.