Home / 831,716.40-1,247,574.60-411,812.40

Finding the Fourth Proportional to 831,716.40, 1,247,574.60 and 411,812.40

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Solution

The fourth proportional to 831,716.40, 1,247,574.60 and 411,812.40 is: 617,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,716.40 : 1,247,574.60 = 411,812.40 : x
  2. Step 2: Convert to fraction form
    831,716.40/1,247,574.60 = 411,812.40/x
  3. Step 3: Cross multiply
    831,716.40x = 1,247,574.60 × 411,812.40
  4. Step 4: Simplify right side
    831,716.40x = 513,766,690,205.04
  5. Step 5: Solve for x
    x = 513,766,690,205.04/831,716.40
  6. Step 6: Final answer
    x = 617,718.60

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Half scale
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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.