Home / 1,989,487.60-2,984,231.40-659,618.80

Finding the Fourth Proportional to 1,989,487.60, 2,984,231.40 and 659,618.80

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Solution

The fourth proportional to 1,989,487.60, 2,984,231.40 and 659,618.80 is: 989,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,487.60 : 2,984,231.40 = 659,618.80 : x
  2. Step 2: Convert to fraction form
    1,989,487.60/2,984,231.40 = 659,618.80/x
  3. Step 3: Cross multiply
    1,989,487.60x = 2,984,231.40 × 659,618.80
  4. Step 4: Simplify right side
    1,989,487.60x = 1,968,455,134,990.32
  5. Step 5: Solve for x
    x = 1,968,455,134,990.32/1,989,487.60
  6. Step 6: Final answer
    x = 989,428.20

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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.