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Finding the Fourth Proportional to 646,673,072.60, 970,009,608.90 and 186,626,250.20

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Solution

The fourth proportional to 646,673,072.60, 970,009,608.90 and 186,626,250.20 is: 279,939,375.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,673,072.60 : 970,009,608.90 = 186,626,250.20 : x
  2. Step 2: Convert to fraction form
    646,673,072.60/970,009,608.90 = 186,626,250.20/x
  3. Step 3: Cross multiply
    646,673,072.60x = 970,009,608.90 × 186,626,250.20
  4. Step 4: Simplify right side
    646,673,072.60x = 181,029,255,966,975,520
  5. Step 5: Solve for x
    x = 181,029,255,966,975,520/646,673,072.60
  6. Step 6: Final answer
    x = 279,939,375.30

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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.