Home / 691,011.69-953,583.24-385,081.38

Finding the Fourth Proportional to 691,011.69, 953,583.24 and 385,081.38

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Solution

The fourth proportional to 691,011.69, 953,583.24 and 385,081.38 is: 531,405.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,011.69 : 953,583.24 = 385,081.38 : x
  2. Step 2: Convert to fraction form
    691,011.69/953,583.24 = 385,081.38/x
  3. Step 3: Cross multiply
    691,011.69x = 953,583.24 × 385,081.38
  4. Step 4: Simplify right side
    691,011.69x = 367,207,143,310.75
  5. Step 5: Solve for x
    x = 367,207,143,310.75/691,011.69
  6. Step 6: Final answer
    x = 531,405.11

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.