Home / 2,209,131.64-3,048,643.08-1,291,439.20

Finding the Fourth Proportional to 2,209,131.64, 3,048,643.08 and 1,291,439.20

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Solution

The fourth proportional to 2,209,131.64, 3,048,643.08 and 1,291,439.20 is: 1,782,210.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209,131.64 : 3,048,643.08 = 1,291,439.20 : x
  2. Step 2: Convert to fraction form
    2,209,131.64/3,048,643.08 = 1,291,439.20/x
  3. Step 3: Cross multiply
    2,209,131.64x = 3,048,643.08 × 1,291,439.20
  4. Step 4: Simplify right side
    2,209,131.64x = 3,937,137,180,320.74
  5. Step 5: Solve for x
    x = 3,937,137,180,320.74/2,209,131.64
  6. Step 6: Final answer
    x = 1,782,210.31

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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.