Home / 771,846,785.75-1,065,147,753.99-419,421,938.06

Finding the Fourth Proportional to 771,846,785.75, 1,065,147,753.99 and 419,421,938.06

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Solution

The fourth proportional to 771,846,785.75, 1,065,147,753.99 and 419,421,938.06 is: 578,801,834.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,846,785.75 : 1,065,147,753.99 = 419,421,938.06 : x
  2. Step 2: Convert to fraction form
    771,846,785.75/1,065,147,753.99 = 419,421,938.06/x
  3. Step 3: Cross multiply
    771,846,785.75x = 1,065,147,753.99 × 419,421,938.06
  4. Step 4: Simplify right side
    771,846,785.75x = 446,746,335,298,741,888
  5. Step 5: Solve for x
    x = 446,746,335,298,741,888/771,846,785.75
  6. Step 6: Final answer
    x = 578,801,834.18

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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.