Home / 751,303,339,935.80-1,036,741,709,787.20-421,642,709,938.72

Finding the Fourth Proportional to 751,303,339,935.80, 1,036,741,709,787.20 and 421,642,709,938.72

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Solution

The fourth proportional to 751,303,339,935.80, 1,036,741,709,787.20 and 421,642,709,938.72 is: 581,835,006,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,303,339,935.80 : 1,036,741,709,787.20 = 421,642,709,938.72 : x
  2. Step 2: Convert to fraction form
    751,303,339,935.80/1,036,741,709,787.20 = 421,642,709,938.72/x
  3. Step 3: Cross multiply
    751,303,339,935.80x = 1,036,741,709,787.20 × 421,642,709,938.72
  4. Step 4: Simplify right side
    751,303,339,935.80x = 437,134,584,021,176,968,806,400
  5. Step 5: Solve for x
    x = 437,134,584,021,176,968,806,400/751,303,339,935.80
  6. Step 6: Final answer
    x = 581,835,006,960.75

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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.