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Finding the Fourth Proportional to 778,879.80, 1,168,626.90 and 305,484.60

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Solution

The fourth proportional to 778,879.80, 1,168,626.90 and 305,484.60 is: 458,347.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,879.80 : 1,168,626.90 = 305,484.60 : x
  2. Step 2: Convert to fraction form
    778,879.80/1,168,626.90 = 305,484.60/x
  3. Step 3: Cross multiply
    778,879.80x = 1,168,626.90 × 305,484.60
  4. Step 4: Simplify right side
    778,879.80x = 356,997,521,095.74
  5. Step 5: Solve for x
    x = 356,997,521,095.74/778,879.80
  6. Step 6: Final answer
    x = 458,347.39

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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.