Home / 649,819.60-974,729.40-640,488.40

Finding the Fourth Proportional to 649,819.60, 974,729.40 and 640,488.40

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Solution

The fourth proportional to 649,819.60, 974,729.40 and 640,488.40 is: 960,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,819.60 : 974,729.40 = 640,488.40 : x
  2. Step 2: Convert to fraction form
    649,819.60/974,729.40 = 640,488.40/x
  3. Step 3: Cross multiply
    649,819.60x = 974,729.40 × 640,488.40
  4. Step 4: Simplify right side
    649,819.60x = 624,302,873,838.96
  5. Step 5: Solve for x
    x = 624,302,873,838.96/649,819.60
  6. Step 6: Final answer
    x = 960,732.60

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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.