Home / 1,990,689.60-2,986,034.40-494,781.60

Finding the Fourth Proportional to 1,990,689.60, 2,986,034.40 and 494,781.60

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Solution

The fourth proportional to 1,990,689.60, 2,986,034.40 and 494,781.60 is: 742,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,689.60 : 2,986,034.40 = 494,781.60 : x
  2. Step 2: Convert to fraction form
    1,990,689.60/2,986,034.40 = 494,781.60/x
  3. Step 3: Cross multiply
    1,990,689.60x = 2,986,034.40 × 494,781.60
  4. Step 4: Simplify right side
    1,990,689.60x = 1,477,434,878,087.04
  5. Step 5: Solve for x
    x = 1,477,434,878,087.04/1,990,689.60
  6. Step 6: Final answer
    x = 742,172.40

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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.