Home / 1,318,594.23-1,978,189.68-420,087.15

Finding the Fourth Proportional to 1,318,594.23, 1,978,189.68 and 420,087.15

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Solution

The fourth proportional to 1,318,594.23, 1,978,189.68 and 420,087.15 is: 630,225.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,594.23 : 1,978,189.68 = 420,087.15 : x
  2. Step 2: Convert to fraction form
    1,318,594.23/1,978,189.68 = 420,087.15/x
  3. Step 3: Cross multiply
    1,318,594.23x = 1,978,189.68 × 420,087.15
  4. Step 4: Simplify right side
    1,318,594.23x = 831,012,064,830.61
  5. Step 5: Solve for x
    x = 831,012,064,830.61/1,318,594.23
  6. Step 6: Final answer
    x = 630,225.77

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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.