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Finding the Fourth Proportional to 828,879.86, 1,243,319.80 and 296,368.60

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Solution

The fourth proportional to 828,879.86, 1,243,319.80 and 296,368.60 is: 444,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,879.86 : 1,243,319.80 = 296,368.60 : x
  2. Step 2: Convert to fraction form
    828,879.86/1,243,319.80 = 296,368.60/x
  3. Step 3: Cross multiply
    828,879.86x = 1,243,319.80 × 296,368.60
  4. Step 4: Simplify right side
    828,879.86x = 368,480,944,629.06
  5. Step 5: Solve for x
    x = 368,480,944,629.06/828,879.86
  6. Step 6: Final answer
    x = 444,552.90

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1.5x scale

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.