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Finding the Fourth Proportional to 491,870.80, 737,806.20 and 404,390.80

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Solution

The fourth proportional to 491,870.80, 737,806.20 and 404,390.80 is: 606,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,870.80 : 737,806.20 = 404,390.80 : x
  2. Step 2: Convert to fraction form
    491,870.80/737,806.20 = 404,390.80/x
  3. Step 3: Cross multiply
    491,870.80x = 737,806.20 × 404,390.80
  4. Step 4: Simplify right side
    491,870.80x = 298,362,039,462.96
  5. Step 5: Solve for x
    x = 298,362,039,462.96/491,870.80
  6. Step 6: Final answer
    x = 606,586.20

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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.