Home / 1,290,464.20-1,938,495.66-1,243,225

Finding the Fourth Proportional to 1,290,464.20, 1,938,495.66 and 1,243,225

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Solution

The fourth proportional to 1,290,464.20, 1,938,495.66 and 1,243,225 is: 1,867,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,464.20 : 1,938,495.66 = 1,243,225 : x
  2. Step 2: Convert to fraction form
    1,290,464.20/1,938,495.66 = 1,243,225/x
  3. Step 3: Cross multiply
    1,290,464.20x = 1,938,495.66 × 1,243,225
  4. Step 4: Simplify right side
    1,290,464.20x = 2,409,986,266,903.50
  5. Step 5: Solve for x
    x = 2,409,986,266,903.50/1,290,464.20
  6. Step 6: Final answer
    x = 1,867,534.39

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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.