Home / 1,109,930.40-1,664,895.60-399,981.60

Finding the Fourth Proportional to 1,109,930.40, 1,664,895.60 and 399,981.60

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Solution

The fourth proportional to 1,109,930.40, 1,664,895.60 and 399,981.60 is: 599,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,930.40 : 1,664,895.60 = 399,981.60 : x
  2. Step 2: Convert to fraction form
    1,109,930.40/1,664,895.60 = 399,981.60/x
  3. Step 3: Cross multiply
    1,109,930.40x = 1,664,895.60 × 399,981.60
  4. Step 4: Simplify right side
    1,109,930.40x = 665,927,605,920.96
  5. Step 5: Solve for x
    x = 665,927,605,920.96/1,109,930.40
  6. Step 6: Final answer
    x = 599,972.40

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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.