Home / 829,007.80-1,243,511.70-408,196.60

Finding the Fourth Proportional to 829,007.80, 1,243,511.70 and 408,196.60

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Solution

The fourth proportional to 829,007.80, 1,243,511.70 and 408,196.60 is: 612,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,007.80 : 1,243,511.70 = 408,196.60 : x
  2. Step 2: Convert to fraction form
    829,007.80/1,243,511.70 = 408,196.60/x
  3. Step 3: Cross multiply
    829,007.80x = 1,243,511.70 × 408,196.60
  4. Step 4: Simplify right side
    829,007.80x = 507,597,248,000.22
  5. Step 5: Solve for x
    x = 507,597,248,000.22/829,007.80
  6. Step 6: Final answer
    x = 612,294.90

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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.