Home / 1,318,792.57-1,978,167.04-420,222.10

Finding the Fourth Proportional to 1,318,792.57, 1,978,167.04 and 420,222.10

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Solution

The fourth proportional to 1,318,792.57, 1,978,167.04 and 420,222.10 is: 630,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,792.57 : 1,978,167.04 = 420,222.10 : x
  2. Step 2: Convert to fraction form
    1,318,792.57/1,978,167.04 = 420,222.10/x
  3. Step 3: Cross multiply
    1,318,792.57x = 1,978,167.04 × 420,222.10
  4. Step 4: Simplify right side
    1,318,792.57x = 831,269,507,699.58
  5. Step 5: Solve for x
    x = 831,269,507,699.58/1,318,792.57
  6. Step 6: Final answer
    x = 630,326.20

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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.