Home / 691,386.40-1,037,079.60-431,797.60

Finding the Fourth Proportional to 691,386.40, 1,037,079.60 and 431,797.60

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Solution

The fourth proportional to 691,386.40, 1,037,079.60 and 431,797.60 is: 647,696.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,386.40 : 1,037,079.60 = 431,797.60 : x
  2. Step 2: Convert to fraction form
    691,386.40/1,037,079.60 = 431,797.60/x
  3. Step 3: Cross multiply
    691,386.40x = 1,037,079.60 × 431,797.60
  4. Step 4: Simplify right side
    691,386.40x = 447,808,482,288.96
  5. Step 5: Solve for x
    x = 447,808,482,288.96/691,386.40
  6. Step 6: Final answer
    x = 647,696.40

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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.