Home / 856,359.60-1,284,539.40-257,413.20

Finding the Fourth Proportional to 856,359.60, 1,284,539.40 and 257,413.20

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Solution

The fourth proportional to 856,359.60, 1,284,539.40 and 257,413.20 is: 386,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,359.60 : 1,284,539.40 = 257,413.20 : x
  2. Step 2: Convert to fraction form
    856,359.60/1,284,539.40 = 257,413.20/x
  3. Step 3: Cross multiply
    856,359.60x = 1,284,539.40 × 257,413.20
  4. Step 4: Simplify right side
    856,359.60x = 330,657,397,480.08
  5. Step 5: Solve for x
    x = 330,657,397,480.08/856,359.60
  6. Step 6: Final answer
    x = 386,119.80

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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.