Home / 1,391,738.76-1,920,717.26-779,884.50

Finding the Fourth Proportional to 1,391,738.76, 1,920,717.26 and 779,884.50

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Solution

The fourth proportional to 1,391,738.76, 1,920,717.26 and 779,884.50 is: 1,076,306.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,738.76 : 1,920,717.26 = 779,884.50 : x
  2. Step 2: Convert to fraction form
    1,391,738.76/1,920,717.26 = 779,884.50/x
  3. Step 3: Cross multiply
    1,391,738.76x = 1,920,717.26 × 779,884.50
  4. Step 4: Simplify right side
    1,391,738.76x = 1,497,937,626,184.30
  5. Step 5: Solve for x
    x = 1,497,937,626,184.30/1,391,738.76
  6. Step 6: Final answer
    x = 1,076,306.61

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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.