Home / 1,980,329.80-2,970,494.78-1,081,281.13

Finding the Fourth Proportional to 1,980,329.80, 2,970,494.78 and 1,081,281.13

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Solution

The fourth proportional to 1,980,329.80, 2,970,494.78 and 1,081,281.13 is: 1,621,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,329.80 : 2,970,494.78 = 1,081,281.13 : x
  2. Step 2: Convert to fraction form
    1,980,329.80/2,970,494.78 = 1,081,281.13/x
  3. Step 3: Cross multiply
    1,980,329.80x = 2,970,494.78 × 1,081,281.13
  4. Step 4: Simplify right side
    1,980,329.80x = 3,211,939,956,253.89
  5. Step 5: Solve for x
    x = 3,211,939,956,253.89/1,980,329.80
  6. Step 6: Final answer
    x = 1,621,921.74

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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.