Home / 388,667,819.61-583,001,729.46-129,883,039.85

Finding the Fourth Proportional to 388,667,819.61, 583,001,729.46 and 129,883,039.85

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Solution

The fourth proportional to 388,667,819.61, 583,001,729.46 and 129,883,039.85 is: 194,824,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,667,819.61 : 583,001,729.46 = 129,883,039.85 : x
  2. Step 2: Convert to fraction form
    388,667,819.61/583,001,729.46 = 129,883,039.85/x
  3. Step 3: Cross multiply
    388,667,819.61x = 583,001,729.46 × 129,883,039.85
  4. Step 4: Simplify right side
    388,667,819.61x = 75,722,036,861,529,616
  5. Step 5: Solve for x
    x = 75,722,036,861,529,616/388,667,819.61
  6. Step 6: Final answer
    x = 194,824,559.79

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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.