Home / 778,234.26-1,073,979.70-438,702.50

Finding the Fourth Proportional to 778,234.26, 1,073,979.70 and 438,702.50

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Solution

The fourth proportional to 778,234.26, 1,073,979.70 and 438,702.50 is: 605,418.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,234.26 : 1,073,979.70 = 438,702.50 : x
  2. Step 2: Convert to fraction form
    778,234.26/1,073,979.70 = 438,702.50/x
  3. Step 3: Cross multiply
    778,234.26x = 1,073,979.70 × 438,702.50
  4. Step 4: Simplify right side
    778,234.26x = 471,157,579,339.25
  5. Step 5: Solve for x
    x = 471,157,579,339.25/778,234.26
  6. Step 6: Final answer
    x = 605,418.71

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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.