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Finding the Fourth Proportional to 662,406.40, 993,609.60 and 163,770.40

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Solution

The fourth proportional to 662,406.40, 993,609.60 and 163,770.40 is: 245,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,406.40 : 993,609.60 = 163,770.40 : x
  2. Step 2: Convert to fraction form
    662,406.40/993,609.60 = 163,770.40/x
  3. Step 3: Cross multiply
    662,406.40x = 993,609.60 × 163,770.40
  4. Step 4: Simplify right side
    662,406.40x = 162,723,841,635.84
  5. Step 5: Solve for x
    x = 162,723,841,635.84/662,406.40
  6. Step 6: Final answer
    x = 245,655.60

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Double scale
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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.