Home / 1,421,410.36-1,961,356.80-912,801.64

Finding the Fourth Proportional to 1,421,410.36, 1,961,356.80 and 912,801.64

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Solution

The fourth proportional to 1,421,410.36, 1,961,356.80 and 912,801.64 is: 1,259,544.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,410.36 : 1,961,356.80 = 912,801.64 : x
  2. Step 2: Convert to fraction form
    1,421,410.36/1,961,356.80 = 912,801.64/x
  3. Step 3: Cross multiply
    1,421,410.36x = 1,961,356.80 × 912,801.64
  4. Step 4: Simplify right side
    1,421,410.36x = 1,790,329,703,665.15
  5. Step 5: Solve for x
    x = 1,790,329,703,665.15/1,421,410.36
  6. Step 6: Final answer
    x = 1,259,544.57

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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.