Home / 828,680.54-1,143,590.96-489,148.79

Finding the Fourth Proportional to 828,680.54, 1,143,590.96 and 489,148.79

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Solution

The fourth proportional to 828,680.54, 1,143,590.96 and 489,148.79 is: 675,032.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,680.54 : 1,143,590.96 = 489,148.79 : x
  2. Step 2: Convert to fraction form
    828,680.54/1,143,590.96 = 489,148.79/x
  3. Step 3: Cross multiply
    828,680.54x = 1,143,590.96 × 489,148.79
  4. Step 4: Simplify right side
    828,680.54x = 559,386,131,893.19
  5. Step 5: Solve for x
    x = 559,386,131,893.19/828,680.54
  6. Step 6: Final answer
    x = 675,032.30

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Double scale
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1.5x scale

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.