Home / 828,010.10-1,242,015.15-379,237.70

Finding the Fourth Proportional to 828,010.10, 1,242,015.15 and 379,237.70

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Solution

The fourth proportional to 828,010.10, 1,242,015.15 and 379,237.70 is: 568,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,010.10 : 1,242,015.15 = 379,237.70 : x
  2. Step 2: Convert to fraction form
    828,010.10/1,242,015.15 = 379,237.70/x
  3. Step 3: Cross multiply
    828,010.10x = 1,242,015.15 × 379,237.70
  4. Step 4: Simplify right side
    828,010.10x = 471,018,968,851.16
  5. Step 5: Solve for x
    x = 471,018,968,851.16/828,010.10
  6. Step 6: Final answer
    x = 568,856.55

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Double scale
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Similar ratio
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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.