Home / 2,158,020.66-2,978,068.76-1,191,151.22

Finding the Fourth Proportional to 2,158,020.66, 2,978,068.76 and 1,191,151.22

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Solution

The fourth proportional to 2,158,020.66, 2,978,068.76 and 1,191,151.22 is: 1,643,788.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,020.66 : 2,978,068.76 = 1,191,151.22 : x
  2. Step 2: Convert to fraction form
    2,158,020.66/2,978,068.76 = 1,191,151.22/x
  3. Step 3: Cross multiply
    2,158,020.66x = 2,978,068.76 × 1,191,151.22
  4. Step 4: Simplify right side
    2,158,020.66x = 3,547,330,215,871.79
  5. Step 5: Solve for x
    x = 3,547,330,215,871.79/2,158,020.66
  6. Step 6: Final answer
    x = 1,643,788.81

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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.