Home / 1,191,321.78-1,644,036.76-647,457.59

Finding the Fourth Proportional to 1,191,321.78, 1,644,036.76 and 647,457.59

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Solution

The fourth proportional to 1,191,321.78, 1,644,036.76 and 647,457.59 is: 893,498.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,321.78 : 1,644,036.76 = 647,457.59 : x
  2. Step 2: Convert to fraction form
    1,191,321.78/1,644,036.76 = 647,457.59/x
  3. Step 3: Cross multiply
    1,191,321.78x = 1,644,036.76 × 647,457.59
  4. Step 4: Simplify right side
    1,191,321.78x = 1,064,444,083,420.42
  5. Step 5: Solve for x
    x = 1,064,444,083,420.42/1,191,321.78
  6. Step 6: Final answer
    x = 893,498.39

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Double scale
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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.