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Finding the Fourth Proportional to 879,266.65, 1,318,210.98 and 347,185.96

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Solution

The fourth proportional to 879,266.65, 1,318,210.98 and 347,185.96 is: 520,506.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,266.65 : 1,318,210.98 = 347,185.96 : x
  2. Step 2: Convert to fraction form
    879,266.65/1,318,210.98 = 347,185.96/x
  3. Step 3: Cross multiply
    879,266.65x = 1,318,210.98 × 347,185.96
  4. Step 4: Simplify right side
    879,266.65x = 457,664,344,573.84
  5. Step 5: Solve for x
    x = 457,664,344,573.84/879,266.65
  6. Step 6: Final answer
    x = 520,506.88

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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.