Home / 2,106,479.16-2,907,288.96-1,291,136.40

Finding the Fourth Proportional to 2,106,479.16, 2,907,288.96 and 1,291,136.40

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Solution

The fourth proportional to 2,106,479.16, 2,907,288.96 and 1,291,136.40 is: 1,781,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106,479.16 : 2,907,288.96 = 1,291,136.40 : x
  2. Step 2: Convert to fraction form
    2,106,479.16/2,907,288.96 = 1,291,136.40/x
  3. Step 3: Cross multiply
    2,106,479.16x = 2,907,288.96 × 1,291,136.40
  4. Step 4: Simplify right side
    2,106,479.16x = 3,753,706,601,574.14
  5. Step 5: Solve for x
    x = 3,753,706,601,574.14/2,106,479.16
  6. Step 6: Final answer
    x = 1,781,981.36

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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.