Home / 448,413.14-618,460.20-287,283.18

Finding the Fourth Proportional to 448,413.14, 618,460.20 and 287,283.18

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Solution

The fourth proportional to 448,413.14, 618,460.20 and 287,283.18 is: 396,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,413.14 : 618,460.20 = 287,283.18 : x
  2. Step 2: Convert to fraction form
    448,413.14/618,460.20 = 287,283.18/x
  3. Step 3: Cross multiply
    448,413.14x = 618,460.20 × 287,283.18
  4. Step 4: Simplify right side
    448,413.14x = 177,673,212,959.44
  5. Step 5: Solve for x
    x = 177,673,212,959.44/448,413.14
  6. Step 6: Final answer
    x = 396,226.60

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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.