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Finding the Fourth Proportional to 612,047.65, 918,373.20 and 275,326.60

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Solution

The fourth proportional to 612,047.65, 918,373.20 and 275,326.60 is: 413,125.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,047.65 : 918,373.20 = 275,326.60 : x
  2. Step 2: Convert to fraction form
    612,047.65/918,373.20 = 275,326.60/x
  3. Step 3: Cross multiply
    612,047.65x = 918,373.20 × 275,326.60
  4. Step 4: Simplify right side
    612,047.65x = 252,852,570,687.12
  5. Step 5: Solve for x
    x = 252,852,570,687.12/612,047.65
  6. Step 6: Final answer
    x = 413,125.63

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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.