Home / 1,392,516.51-1,921,218.22-811,606.48

Finding the Fourth Proportional to 1,392,516.51, 1,921,218.22 and 811,606.48

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Solution

The fourth proportional to 1,392,516.51, 1,921,218.22 and 811,606.48 is: 1,119,752.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,516.51 : 1,921,218.22 = 811,606.48 : x
  2. Step 2: Convert to fraction form
    1,392,516.51/1,921,218.22 = 811,606.48/x
  3. Step 3: Cross multiply
    1,392,516.51x = 1,921,218.22 × 811,606.48
  4. Step 4: Simplify right side
    1,392,516.51x = 1,559,273,161,581.74
  5. Step 5: Solve for x
    x = 1,559,273,161,581.74/1,392,516.51
  6. Step 6: Final answer
    x = 1,119,752.01

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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.