Home / 2,158,021.64-2,978,070.12-1,191,152.19

Finding the Fourth Proportional to 2,158,021.64, 2,978,070.12 and 1,191,152.19

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Solution

The fourth proportional to 2,158,021.64, 2,978,070.12 and 1,191,152.19 is: 1,643,790.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,021.64 : 2,978,070.12 = 1,191,152.19 : x
  2. Step 2: Convert to fraction form
    2,158,021.64/2,978,070.12 = 1,191,152.19/x
  3. Step 3: Cross multiply
    2,158,021.64x = 2,978,070.12 × 1,191,152.19
  4. Step 4: Simplify right side
    2,158,021.64x = 3,547,334,756,579.33
  5. Step 5: Solve for x
    x = 3,547,334,756,579.33/2,158,021.64
  6. Step 6: Final answer
    x = 1,643,790.17

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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.