Home / 1,319,056.18-1,978,727.66-420,286.66

Finding the Fourth Proportional to 1,319,056.18, 1,978,727.66 and 420,286.66

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Solution

The fourth proportional to 1,319,056.18, 1,978,727.66 and 420,286.66 is: 630,475.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,056.18 : 1,978,727.66 = 420,286.66 : x
  2. Step 2: Convert to fraction form
    1,319,056.18/1,978,727.66 = 420,286.66/x
  3. Step 3: Cross multiply
    1,319,056.18x = 1,978,727.66 × 420,286.66
  4. Step 4: Simplify right side
    1,319,056.18x = 831,632,839,271.02
  5. Step 5: Solve for x
    x = 831,632,839,271.02/1,319,056.18
  6. Step 6: Final answer
    x = 630,475.68

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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.