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Finding the Fourth Proportional to 638,592,200.40, 957,888,300.60 and 207,770,696.40

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Solution

The fourth proportional to 638,592,200.40, 957,888,300.60 and 207,770,696.40 is: 311,656,044.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,592,200.40 : 957,888,300.60 = 207,770,696.40 : x
  2. Step 2: Convert to fraction form
    638,592,200.40/957,888,300.60 = 207,770,696.40/x
  3. Step 3: Cross multiply
    638,592,200.40x = 957,888,300.60 × 207,770,696.40
  4. Step 4: Simplify right side
    638,592,200.40x = 199,021,119,289,074,560
  5. Step 5: Solve for x
    x = 199,021,119,289,074,560/638,592,200.40
  6. Step 6: Final answer
    x = 311,656,044.60

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Similar ratio
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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.