Home / 1,442,421.89-1,990,408.60-797,828.21

Finding the Fourth Proportional to 1,442,421.89, 1,990,408.60 and 797,828.21

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Solution

The fourth proportional to 1,442,421.89, 1,990,408.60 and 797,828.21 is: 1,100,929.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,421.89 : 1,990,408.60 = 797,828.21 : x
  2. Step 2: Convert to fraction form
    1,442,421.89/1,990,408.60 = 797,828.21/x
  3. Step 3: Cross multiply
    1,442,421.89x = 1,990,408.60 × 797,828.21
  4. Step 4: Simplify right side
    1,442,421.89x = 1,588,004,130,506.61
  5. Step 5: Solve for x
    x = 1,588,004,130,506.61/1,442,421.89
  6. Step 6: Final answer
    x = 1,100,929.03

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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.