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Finding the Fourth Proportional to 525,990.80, 788,986.20 and 325,661.60

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Solution

The fourth proportional to 525,990.80, 788,986.20 and 325,661.60 is: 488,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,990.80 : 788,986.20 = 325,661.60 : x
  2. Step 2: Convert to fraction form
    525,990.80/788,986.20 = 325,661.60/x
  3. Step 3: Cross multiply
    525,990.80x = 788,986.20 × 325,661.60
  4. Step 4: Simplify right side
    525,990.80x = 256,942,508,269.92
  5. Step 5: Solve for x
    x = 256,942,508,269.92/525,990.80
  6. Step 6: Final answer
    x = 488,492.40

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Similar ratio
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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.