Home / 919,934.10-1,379,901.15-680,785.65

Finding the Fourth Proportional to 919,934.10, 1,379,901.15 and 680,785.65

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Solution

The fourth proportional to 919,934.10, 1,379,901.15 and 680,785.65 is: 1,021,178.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,934.10 : 1,379,901.15 = 680,785.65 : x
  2. Step 2: Convert to fraction form
    919,934.10/1,379,901.15 = 680,785.65/x
  3. Step 3: Cross multiply
    919,934.10x = 1,379,901.15 × 680,785.65
  4. Step 4: Simplify right side
    919,934.10x = 939,416,901,338.50
  5. Step 5: Solve for x
    x = 939,416,901,338.50/919,934.10
  6. Step 6: Final answer
    x = 1,021,178.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.