Home / 639,738,019.80-959,607,029.70-523,511,873.10

Finding the Fourth Proportional to 639,738,019.80, 959,607,029.70 and 523,511,873.10

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Solution

The fourth proportional to 639,738,019.80, 959,607,029.70 and 523,511,873.10 is: 785,267,809.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,738,019.80 : 959,607,029.70 = 523,511,873.10 : x
  2. Step 2: Convert to fraction form
    639,738,019.80/959,607,029.70 = 523,511,873.10/x
  3. Step 3: Cross multiply
    639,738,019.80x = 959,607,029.70 × 523,511,873.10
  4. Step 4: Simplify right side
    639,738,019.80x = 502,365,673,558,174,400
  5. Step 5: Solve for x
    x = 502,365,673,558,174,400/639,738,019.80
  6. Step 6: Final answer
    x = 785,267,809.65

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Double scale
Find fourth proportional to 639,738,020.80, 959,607,031.20 and 523,511,874.10
Similar ratio
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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.