Home / 1,191,285.54-1,643,984.37-647,421.44

Finding the Fourth Proportional to 1,191,285.54, 1,643,984.37 and 647,421.44

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Solution

The fourth proportional to 1,191,285.54, 1,643,984.37 and 647,421.44 is: 893,447.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,285.54 : 1,643,984.37 = 647,421.44 : x
  2. Step 2: Convert to fraction form
    1,191,285.54/1,643,984.37 = 647,421.44/x
  3. Step 3: Cross multiply
    1,191,285.54x = 1,643,984.37 × 647,421.44
  4. Step 4: Simplify right side
    1,191,285.54x = 1,064,350,719,942.97
  5. Step 5: Solve for x
    x = 1,064,350,719,942.97/1,191,285.54
  6. Step 6: Final answer
    x = 893,447.19

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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.