Home / 579,975.12-870,184.40-327,540.64

Finding the Fourth Proportional to 579,975.12, 870,184.40 and 327,540.64

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Solution

The fourth proportional to 579,975.12, 870,184.40 and 327,540.64 is: 491,436.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,975.12 : 870,184.40 = 327,540.64 : x
  2. Step 2: Convert to fraction form
    579,975.12/870,184.40 = 327,540.64/x
  3. Step 3: Cross multiply
    579,975.12x = 870,184.40 × 327,540.64
  4. Step 4: Simplify right side
    579,975.12x = 285,020,755,294.02
  5. Step 5: Solve for x
    x = 285,020,755,294.02/579,975.12
  6. Step 6: Final answer
    x = 491,436.18

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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.