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Finding the Fourth Proportional to 656,733.60, 985,100.40 and 420,537.60

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Solution

The fourth proportional to 656,733.60, 985,100.40 and 420,537.60 is: 630,806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,733.60 : 985,100.40 = 420,537.60 : x
  2. Step 2: Convert to fraction form
    656,733.60/985,100.40 = 420,537.60/x
  3. Step 3: Cross multiply
    656,733.60x = 985,100.40 × 420,537.60
  4. Step 4: Simplify right side
    656,733.60x = 414,271,757,975.04
  5. Step 5: Solve for x
    x = 414,271,757,975.04/656,733.60
  6. Step 6: Final answer
    x = 630,806.40

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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.