Home / 923,511.80-1,384,230.90-390,942.20

Finding the Fourth Proportional to 923,511.80, 1,384,230.90 and 390,942.20

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Solution

The fourth proportional to 923,511.80, 1,384,230.90 and 390,942.20 is: 585,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,511.80 : 1,384,230.90 = 390,942.20 : x
  2. Step 2: Convert to fraction form
    923,511.80/1,384,230.90 = 390,942.20/x
  3. Step 3: Cross multiply
    923,511.80x = 1,384,230.90 × 390,942.20
  4. Step 4: Simplify right side
    923,511.80x = 541,154,273,353.98
  5. Step 5: Solve for x
    x = 541,154,273,353.98/923,511.80
  6. Step 6: Final answer
    x = 585,974.40

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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.