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Finding the Fourth Proportional to 642,074.40, 962,074.80 and 404,992.80

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Solution

The fourth proportional to 642,074.40, 962,074.80 and 404,992.80 is: 606,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,074.40 : 962,074.80 = 404,992.80 : x
  2. Step 2: Convert to fraction form
    642,074.40/962,074.80 = 404,992.80/x
  3. Step 3: Cross multiply
    642,074.40x = 962,074.80 × 404,992.80
  4. Step 4: Simplify right side
    642,074.40x = 389,633,367,061.44
  5. Step 5: Solve for x
    x = 389,633,367,061.44/642,074.40
  6. Step 6: Final answer
    x = 606,835.23

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1.5x scale

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.