Home / 1,327,792,029.20-1,991,688,043.80-811,231,377.20

Finding the Fourth Proportional to 1,327,792,029.20, 1,991,688,043.80 and 811,231,377.20

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Solution

The fourth proportional to 1,327,792,029.20, 1,991,688,043.80 and 811,231,377.20 is: 1,216,847,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,792,029.20 : 1,991,688,043.80 = 811,231,377.20 : x
  2. Step 2: Convert to fraction form
    1,327,792,029.20/1,991,688,043.80 = 811,231,377.20/x
  3. Step 3: Cross multiply
    1,327,792,029.20x = 1,991,688,043.80 × 811,231,377.20
  4. Step 4: Simplify right side
    1,327,792,029.20x = 1,615,719,834,724,647,936
  5. Step 5: Solve for x
    x = 1,615,719,834,724,647,936/1,327,792,029.20
  6. Step 6: Final answer
    x = 1,216,847,065.80

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Double scale
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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.