Home / 2,209,128.64-3,048,638.94-1,291,436.20

Finding the Fourth Proportional to 2,209,128.64, 3,048,638.94 and 1,291,436.20

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Solution

The fourth proportional to 2,209,128.64, 3,048,638.94 and 1,291,436.20 is: 1,782,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209,128.64 : 3,048,638.94 = 1,291,436.20 : x
  2. Step 2: Convert to fraction form
    2,209,128.64/3,048,638.94 = 1,291,436.20/x
  3. Step 3: Cross multiply
    2,209,128.64x = 3,048,638.94 × 1,291,436.20
  4. Step 4: Simplify right side
    2,209,128.64x = 3,937,122,687,845.63
  5. Step 5: Solve for x
    x = 3,937,122,687,845.63/2,209,128.64
  6. Step 6: Final answer
    x = 1,782,206.17

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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.