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Finding the Fourth Proportional to 612,402.65, 918,480.60 and 384,596.53

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Solution

The fourth proportional to 612,402.65, 918,480.60 and 384,596.53 is: 576,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,402.65 : 918,480.60 = 384,596.53 : x
  2. Step 2: Convert to fraction form
    612,402.65/918,480.60 = 384,596.53/x
  3. Step 3: Cross multiply
    612,402.65x = 918,480.60 × 384,596.53
  4. Step 4: Simplify right side
    612,402.65x = 353,244,449,336.12
  5. Step 5: Solve for x
    x = 353,244,449,336.12/612,402.65
  6. Step 6: Final answer
    x = 576,817.31

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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.