Home / 785,816.40-1,178,724.60-628,352.40

Finding the Fourth Proportional to 785,816.40, 1,178,724.60 and 628,352.40

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Solution

The fourth proportional to 785,816.40, 1,178,724.60 and 628,352.40 is: 942,528.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,816.40 : 1,178,724.60 = 628,352.40 : x
  2. Step 2: Convert to fraction form
    785,816.40/1,178,724.60 = 628,352.40/x
  3. Step 3: Cross multiply
    785,816.40x = 1,178,724.60 × 628,352.40
  4. Step 4: Simplify right side
    785,816.40x = 740,654,431,349.04
  5. Step 5: Solve for x
    x = 740,654,431,349.04/785,816.40
  6. Step 6: Final answer
    x = 942,528.60

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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.