Home / 1,990,731.40-2,986,097.10-1,636,145.80

Finding the Fourth Proportional to 1,990,731.40, 2,986,097.10 and 1,636,145.80

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Solution

The fourth proportional to 1,990,731.40, 2,986,097.10 and 1,636,145.80 is: 2,454,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,731.40 : 2,986,097.10 = 1,636,145.80 : x
  2. Step 2: Convert to fraction form
    1,990,731.40/2,986,097.10 = 1,636,145.80/x
  3. Step 3: Cross multiply
    1,990,731.40x = 2,986,097.10 × 1,636,145.80
  4. Step 4: Simplify right side
    1,990,731.40x = 4,885,690,228,557.18
  5. Step 5: Solve for x
    x = 4,885,690,228,557.18/1,990,731.40
  6. Step 6: Final answer
    x = 2,454,218.70

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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.