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Finding the Fourth Proportional to 1,990,143.39, 2,746,406.01 and 1,130,750.81

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Solution

The fourth proportional to 1,990,143.39, 2,746,406.01 and 1,130,750.81 is: 1,560,440.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,143.39 : 2,746,406.01 = 1,130,750.81 : x
  2. Step 2: Convert to fraction form
    1,990,143.39/2,746,406.01 = 1,130,750.81/x
  3. Step 3: Cross multiply
    1,990,143.39x = 2,746,406.01 × 1,130,750.81
  4. Step 4: Simplify right side
    1,990,143.39x = 3,105,500,820,396.37
  5. Step 5: Solve for x
    x = 3,105,500,820,396.37/1,990,143.39
  6. Step 6: Final answer
    x = 1,560,440.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.