Home / 1,391,852.88-1,920,317.76-779,920.56

Finding the Fourth Proportional to 1,391,852.88, 1,920,317.76 and 779,920.56

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Solution

The fourth proportional to 1,391,852.88, 1,920,317.76 and 779,920.56 is: 1,076,044.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,852.88 : 1,920,317.76 = 779,920.56 : x
  2. Step 2: Convert to fraction form
    1,391,852.88/1,920,317.76 = 779,920.56/x
  3. Step 3: Cross multiply
    1,391,852.88x = 1,920,317.76 × 779,920.56
  4. Step 4: Simplify right side
    1,391,852.88x = 1,497,695,302,757.15
  5. Step 5: Solve for x
    x = 1,497,695,302,757.15/1,391,852.88
  6. Step 6: Final answer
    x = 1,076,044.26

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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.