Home / 780,065.70-1,170,098.55-638,348.10

Finding the Fourth Proportional to 780,065.70, 1,170,098.55 and 638,348.10

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Solution

The fourth proportional to 780,065.70, 1,170,098.55 and 638,348.10 is: 957,522.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,065.70 : 1,170,098.55 = 638,348.10 : x
  2. Step 2: Convert to fraction form
    780,065.70/1,170,098.55 = 638,348.10/x
  3. Step 3: Cross multiply
    780,065.70x = 1,170,098.55 × 638,348.10
  4. Step 4: Simplify right side
    780,065.70x = 746,930,186,205.26
  5. Step 5: Solve for x
    x = 746,930,186,205.26/780,065.70
  6. Step 6: Final answer
    x = 957,522.15

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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.