Home / 921,806.40-1,382,709.60-764,342.40

Finding the Fourth Proportional to 921,806.40, 1,382,709.60 and 764,342.40

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Solution

The fourth proportional to 921,806.40, 1,382,709.60 and 764,342.40 is: 1,146,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,806.40 : 1,382,709.60 = 764,342.40 : x
  2. Step 2: Convert to fraction form
    921,806.40/1,382,709.60 = 764,342.40/x
  3. Step 3: Cross multiply
    921,806.40x = 1,382,709.60 × 764,342.40
  4. Step 4: Simplify right side
    921,806.40x = 1,056,863,574,167.04
  5. Step 5: Solve for x
    x = 1,056,863,574,167.04/921,806.40
  6. Step 6: Final answer
    x = 1,146,513.60

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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.