Home / 1,328,441.60-1,992,662.40-429,949.10

Finding the Fourth Proportional to 1,328,441.60, 1,992,662.40 and 429,949.10

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Solution

The fourth proportional to 1,328,441.60, 1,992,662.40 and 429,949.10 is: 644,923.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,441.60 : 1,992,662.40 = 429,949.10 : x
  2. Step 2: Convert to fraction form
    1,328,441.60/1,992,662.40 = 429,949.10/x
  3. Step 3: Cross multiply
    1,328,441.60x = 1,992,662.40 × 429,949.10
  4. Step 4: Simplify right side
    1,328,441.60x = 856,743,405,483.84
  5. Step 5: Solve for x
    x = 856,743,405,483.84/1,328,441.60
  6. Step 6: Final answer
    x = 644,923.65

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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.