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Finding the Fourth Proportional to 492,869.40, 740,859.30 and 455,544.60

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Solution

The fourth proportional to 492,869.40, 740,859.30 and 455,544.60 is: 684,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,869.40 : 740,859.30 = 455,544.60 : x
  2. Step 2: Convert to fraction form
    492,869.40/740,859.30 = 455,544.60/x
  3. Step 3: Cross multiply
    492,869.40x = 740,859.30 × 455,544.60
  4. Step 4: Simplify right side
    492,869.40x = 337,494,453,474.78
  5. Step 5: Solve for x
    x = 337,494,453,474.78/492,869.40
  6. Step 6: Final answer
    x = 684,754.33

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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.