Home / 1,345,278.63-1,855,434.76-861,889.06

Finding the Fourth Proportional to 1,345,278.63, 1,855,434.76 and 861,889.06

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Solution

The fourth proportional to 1,345,278.63, 1,855,434.76 and 861,889.06 is: 1,188,734.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,278.63 : 1,855,434.76 = 861,889.06 : x
  2. Step 2: Convert to fraction form
    1,345,278.63/1,855,434.76 = 861,889.06/x
  3. Step 3: Cross multiply
    1,345,278.63x = 1,855,434.76 × 861,889.06
  4. Step 4: Simplify right side
    1,345,278.63x = 1,599,178,921,187.73
  5. Step 5: Solve for x
    x = 1,599,178,921,187.73/1,345,278.63
  6. Step 6: Final answer
    x = 1,188,734.35

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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.