Home / 928,538.64-1,392,807.60-612,921.60

Finding the Fourth Proportional to 928,538.64, 1,392,807.60 and 612,921.60

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Solution

The fourth proportional to 928,538.64, 1,392,807.60 and 612,921.60 is: 919,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,538.64 : 1,392,807.60 = 612,921.60 : x
  2. Step 2: Convert to fraction form
    928,538.64/1,392,807.60 = 612,921.60/x
  3. Step 3: Cross multiply
    928,538.64x = 1,392,807.60 × 612,921.60
  4. Step 4: Simplify right side
    928,538.64x = 853,681,862,684.16
  5. Step 5: Solve for x
    x = 853,681,862,684.16/928,538.64
  6. Step 6: Final answer
    x = 919,382.16

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Double scale
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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.