Home / 645,293,844.80-967,940,767.20-531,919,764.80

Finding the Fourth Proportional to 645,293,844.80, 967,940,767.20 and 531,919,764.80

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Solution

The fourth proportional to 645,293,844.80, 967,940,767.20 and 531,919,764.80 is: 797,879,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,293,844.80 : 967,940,767.20 = 531,919,764.80 : x
  2. Step 2: Convert to fraction form
    645,293,844.80/967,940,767.20 = 531,919,764.80/x
  3. Step 3: Cross multiply
    645,293,844.80x = 967,940,767.20 × 531,919,764.80
  4. Step 4: Simplify right side
    645,293,844.80x = 514,866,825,229,355,584
  5. Step 5: Solve for x
    x = 514,866,825,229,355,584/645,293,844.80
  6. Step 6: Final answer
    x = 797,879,647.20

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Double scale
Find fourth proportional to 645,293,845.80, 967,940,768.70 and 531,919,765.80
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.