Home / 638,428,103.59-957,670,695.74-195,738,931.57

Finding the Fourth Proportional to 638,428,103.59, 957,670,695.74 and 195,738,931.57

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Solution

The fourth proportional to 638,428,103.59, 957,670,695.74 and 195,738,931.57 is: 293,617,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,428,103.59 : 957,670,695.74 = 195,738,931.57 : x
  2. Step 2: Convert to fraction form
    638,428,103.59/957,670,695.74 = 195,738,931.57/x
  3. Step 3: Cross multiply
    638,428,103.59x = 957,670,695.74 × 195,738,931.57
  4. Step 4: Simplify right side
    638,428,103.59x = 187,453,438,780,046,144
  5. Step 5: Solve for x
    x = 187,453,438,780,046,144/638,428,103.59
  6. Step 6: Final answer
    x = 293,617,147.69

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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.