Home / 830,470.40-1,245,705.60-680,879.60

Finding the Fourth Proportional to 830,470.40, 1,245,705.60 and 680,879.60

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Solution

The fourth proportional to 830,470.40, 1,245,705.60 and 680,879.60 is: 1,021,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,470.40 : 1,245,705.60 = 680,879.60 : x
  2. Step 2: Convert to fraction form
    830,470.40/1,245,705.60 = 680,879.60/x
  3. Step 3: Cross multiply
    830,470.40x = 1,245,705.60 × 680,879.60
  4. Step 4: Simplify right side
    830,470.40x = 848,175,530,645.76
  5. Step 5: Solve for x
    x = 848,175,530,645.76/830,470.40
  6. Step 6: Final answer
    x = 1,021,319.40

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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.