Home / 1,949,342.47-2,688,942.81-1,222,929.05

Finding the Fourth Proportional to 1,949,342.47, 2,688,942.81 and 1,222,929.05

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Solution

The fourth proportional to 1,949,342.47, 2,688,942.81 and 1,222,929.05 is: 1,686,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949,342.47 : 2,688,942.81 = 1,222,929.05 : x
  2. Step 2: Convert to fraction form
    1,949,342.47/2,688,942.81 = 1,222,929.05/x
  3. Step 3: Cross multiply
    1,949,342.47x = 2,688,942.81 × 1,222,929.05
  4. Step 4: Simplify right side
    1,949,342.47x = 3,288,386,284,465.71
  5. Step 5: Solve for x
    x = 3,288,386,284,465.71/1,949,342.47
  6. Step 6: Final answer
    x = 1,686,920.76

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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.