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Finding the Fourth Proportional to 993,205.80, 1,490,424.30 and 520,230.60

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Solution

The fourth proportional to 993,205.80, 1,490,424.30 and 520,230.60 is: 780,668.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,205.80 : 1,490,424.30 = 520,230.60 : x
  2. Step 2: Convert to fraction form
    993,205.80/1,490,424.30 = 520,230.60/x
  3. Step 3: Cross multiply
    993,205.80x = 1,490,424.30 × 520,230.60
  4. Step 4: Simplify right side
    993,205.80x = 775,364,327,843.58
  5. Step 5: Solve for x
    x = 775,364,327,843.58/993,205.80
  6. Step 6: Final answer
    x = 780,668.34

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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.