Home / 448,415.14-618,462.96-287,285.18

Finding the Fourth Proportional to 448,415.14, 618,462.96 and 287,285.18

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Solution

The fourth proportional to 448,415.14, 618,462.96 and 287,285.18 is: 396,229.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,415.14 : 618,462.96 = 287,285.18 : x
  2. Step 2: Convert to fraction form
    448,415.14/618,462.96 = 287,285.18/x
  3. Step 3: Cross multiply
    448,415.14x = 618,462.96 × 287,285.18
  4. Step 4: Simplify right side
    448,415.14x = 177,675,242,786.93
  5. Step 5: Solve for x
    x = 177,675,242,786.93/448,415.14
  6. Step 6: Final answer
    x = 396,229.36

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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.