Home / 915,105,911.38-1,262,984,199.73-558,080,816.76

Finding the Fourth Proportional to 915,105,911.38, 1,262,984,199.73 and 558,080,816.76

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Solution

The fourth proportional to 915,105,911.38, 1,262,984,199.73 and 558,080,816.76 is: 770,235,712.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,105,911.38 : 1,262,984,199.73 = 558,080,816.76 : x
  2. Step 2: Convert to fraction form
    915,105,911.38/1,262,984,199.73 = 558,080,816.76/x
  3. Step 3: Cross multiply
    915,105,911.38x = 1,262,984,199.73 × 558,080,816.76
  4. Step 4: Simplify right side
    915,105,911.38x = 704,847,253,738,898,176
  5. Step 5: Solve for x
    x = 704,847,253,738,898,176/915,105,911.38
  6. Step 6: Final answer
    x = 770,235,712.58

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Half scale
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Double scale
Find fourth proportional to 915,105,912.38, 1,262,984,201.11 and 558,080,817.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.