Home / 771,846,784.75-1,065,147,752.61-419,421,937.06

Finding the Fourth Proportional to 771,846,784.75, 1,065,147,752.61 and 419,421,937.06

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Solution

The fourth proportional to 771,846,784.75, 1,065,147,752.61 and 419,421,937.06 is: 578,801,832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,846,784.75 : 1,065,147,752.61 = 419,421,937.06 : x
  2. Step 2: Convert to fraction form
    771,846,784.75/1,065,147,752.61 = 419,421,937.06/x
  3. Step 3: Cross multiply
    771,846,784.75x = 1,065,147,752.61 × 419,421,937.06
  4. Step 4: Simplify right side
    771,846,784.75x = 446,746,333,647,369,024
  5. Step 5: Solve for x
    x = 446,746,333,647,369,024/771,846,784.75
  6. Step 6: Final answer
    x = 578,801,832.80

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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.