Home / 1,989,438.40-2,983,840.80-659,742.40

Finding the Fourth Proportional to 1,989,438.40, 2,983,840.80 and 659,742.40

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Solution

The fourth proportional to 1,989,438.40, 2,983,840.80 and 659,742.40 is: 989,508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,438.40 : 2,983,840.80 = 659,742.40 : x
  2. Step 2: Convert to fraction form
    1,989,438.40/2,983,840.80 = 659,742.40/x
  3. Step 3: Cross multiply
    1,989,438.40x = 2,983,840.80 × 659,742.40
  4. Step 4: Simplify right side
    1,989,438.40x = 1,968,566,290,609.92
  5. Step 5: Solve for x
    x = 1,968,566,290,609.92/1,989,438.40
  6. Step 6: Final answer
    x = 989,508.54

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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.