Home / 828,427.50-1,242,656.37-259,795.89

Finding the Fourth Proportional to 828,427.50, 1,242,656.37 and 259,795.89

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Solution

The fourth proportional to 828,427.50, 1,242,656.37 and 259,795.89 is: 389,698.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,427.50 : 1,242,656.37 = 259,795.89 : x
  2. Step 2: Convert to fraction form
    828,427.50/1,242,656.37 = 259,795.89/x
  3. Step 3: Cross multiply
    828,427.50x = 1,242,656.37 × 259,795.89
  4. Step 4: Simplify right side
    828,427.50x = 322,837,017,608.32
  5. Step 5: Solve for x
    x = 322,837,017,608.32/828,427.50
  6. Step 6: Final answer
    x = 389,698.58

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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.