Home / 931,037.20-1,396,555.80-663,348.40

Finding the Fourth Proportional to 931,037.20, 1,396,555.80 and 663,348.40

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Solution

The fourth proportional to 931,037.20, 1,396,555.80 and 663,348.40 is: 995,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,037.20 : 1,396,555.80 = 663,348.40 : x
  2. Step 2: Convert to fraction form
    931,037.20/1,396,555.80 = 663,348.40/x
  3. Step 3: Cross multiply
    931,037.20x = 1,396,555.80 × 663,348.40
  4. Step 4: Simplify right side
    931,037.20x = 926,403,055,440.72
  5. Step 5: Solve for x
    x = 926,403,055,440.72/931,037.20
  6. Step 6: Final answer
    x = 995,022.60

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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.