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Finding the Fourth Proportional to 868,240.80, 1,301,410.80 and 306,986.40

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Solution

The fourth proportional to 868,240.80, 1,301,410.80 and 306,986.40 is: 460,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,240.80 : 1,301,410.80 = 306,986.40 : x
  2. Step 2: Convert to fraction form
    868,240.80/1,301,410.80 = 306,986.40/x
  3. Step 3: Cross multiply
    868,240.80x = 1,301,410.80 × 306,986.40
  4. Step 4: Simplify right side
    868,240.80x = 399,515,416,413.12
  5. Step 5: Solve for x
    x = 399,515,416,413.12/868,240.80
  6. Step 6: Final answer
    x = 460,143.56

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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.