Home / 689,047.60-1,033,571.40-656,388.40

Finding the Fourth Proportional to 689,047.60, 1,033,571.40 and 656,388.40

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Solution

The fourth proportional to 689,047.60, 1,033,571.40 and 656,388.40 is: 984,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,047.60 : 1,033,571.40 = 656,388.40 : x
  2. Step 2: Convert to fraction form
    689,047.60/1,033,571.40 = 656,388.40/x
  3. Step 3: Cross multiply
    689,047.60x = 1,033,571.40 × 656,388.40
  4. Step 4: Simplify right side
    689,047.60x = 678,424,277,531.76
  5. Step 5: Solve for x
    x = 678,424,277,531.76/689,047.60
  6. Step 6: Final answer
    x = 984,582.60

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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.