Home / 428,741,725.32-643,116,539.16-122,033,754.36

Finding the Fourth Proportional to 428,741,725.32, 643,116,539.16 and 122,033,754.36

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Solution

The fourth proportional to 428,741,725.32, 643,116,539.16 and 122,033,754.36 is: 183,051,756.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,741,725.32 : 643,116,539.16 = 122,033,754.36 : x
  2. Step 2: Convert to fraction form
    428,741,725.32/643,116,539.16 = 122,033,754.36/x
  3. Step 3: Cross multiply
    428,741,725.32x = 643,116,539.16 × 122,033,754.36
  4. Step 4: Simplify right side
    428,741,725.32x = 78,481,925,764,704,752
  5. Step 5: Solve for x
    x = 78,481,925,764,704,752/428,741,725.32
  6. Step 6: Final answer
    x = 183,051,756.17

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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.