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Finding the Fourth Proportional to 737,740.80, 1,106,611.20 and 485,798.40

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Solution

The fourth proportional to 737,740.80, 1,106,611.20 and 485,798.40 is: 728,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    737,740.80 : 1,106,611.20 = 485,798.40 : x
  2. Step 2: Convert to fraction form
    737,740.80/1,106,611.20 = 485,798.40/x
  3. Step 3: Cross multiply
    737,740.80x = 1,106,611.20 × 485,798.40
  4. Step 4: Simplify right side
    737,740.80x = 537,589,950,382.08
  5. Step 5: Solve for x
    x = 537,589,950,382.08/737,740.80
  6. Step 6: Final answer
    x = 728,697.60

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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.