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Finding the Fourth Proportional to 646,706,634.60, 970,059,951.90 and 186,659,812.20

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Solution

The fourth proportional to 646,706,634.60, 970,059,951.90 and 186,659,812.20 is: 279,989,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,706,634.60 : 970,059,951.90 = 186,659,812.20 : x
  2. Step 2: Convert to fraction form
    646,706,634.60/970,059,951.90 = 186,659,812.20/x
  3. Step 3: Cross multiply
    646,706,634.60x = 970,059,951.90 × 186,659,812.20
  4. Step 4: Simplify right side
    646,706,634.60x = 181,071,208,444,395,008
  5. Step 5: Solve for x
    x = 181,071,208,444,395,008/646,706,634.60
  6. Step 6: Final answer
    x = 279,989,718.30

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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.