Home / 649,286.20-973,929.30-425,337.40

Finding the Fourth Proportional to 649,286.20, 973,929.30 and 425,337.40

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Solution

The fourth proportional to 649,286.20, 973,929.30 and 425,337.40 is: 638,006.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,286.20 : 973,929.30 = 425,337.40 : x
  2. Step 2: Convert to fraction form
    649,286.20/973,929.30 = 425,337.40/x
  3. Step 3: Cross multiply
    649,286.20x = 973,929.30 × 425,337.40
  4. Step 4: Simplify right side
    649,286.20x = 414,248,556,245.82
  5. Step 5: Solve for x
    x = 414,248,556,245.82/649,286.20
  6. Step 6: Final answer
    x = 638,006.10

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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.