Home / 806,045.40-1,209,845.70-407,136.60

Finding the Fourth Proportional to 806,045.40, 1,209,845.70 and 407,136.60

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Solution

The fourth proportional to 806,045.40, 1,209,845.70 and 407,136.60 is: 611,097.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,045.40 : 1,209,845.70 = 407,136.60 : x
  2. Step 2: Convert to fraction form
    806,045.40/1,209,845.70 = 407,136.60/x
  3. Step 3: Cross multiply
    806,045.40x = 1,209,845.70 × 407,136.60
  4. Step 4: Simplify right side
    806,045.40x = 492,572,464,822.62
  5. Step 5: Solve for x
    x = 492,572,464,822.62/806,045.40
  6. Step 6: Final answer
    x = 611,097.67

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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.