Home / 421,659,470.73-581,858,298.95-256,628,800.65

Finding the Fourth Proportional to 421,659,470.73, 581,858,298.95 and 256,628,800.65

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Solution

The fourth proportional to 421,659,470.73, 581,858,298.95 and 256,628,800.65 is: 354,128,408.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,659,470.73 : 581,858,298.95 = 256,628,800.65 : x
  2. Step 2: Convert to fraction form
    421,659,470.73/581,858,298.95 = 256,628,800.65/x
  3. Step 3: Cross multiply
    421,659,470.73x = 581,858,298.95 × 256,628,800.65
  4. Step 4: Simplify right side
    421,659,470.73x = 149,321,597,406,504,512
  5. Step 5: Solve for x
    x = 149,321,597,406,504,512/421,659,470.73
  6. Step 6: Final answer
    x = 354,128,408.76

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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.