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Finding the Fourth Proportional to 646,673,070.60, 970,009,605.90 and 186,626,248.20

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Solution

The fourth proportional to 646,673,070.60, 970,009,605.90 and 186,626,248.20 is: 279,939,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,673,070.60 : 970,009,605.90 = 186,626,248.20 : x
  2. Step 2: Convert to fraction form
    646,673,070.60/970,009,605.90 = 186,626,248.20/x
  3. Step 3: Cross multiply
    646,673,070.60x = 970,009,605.90 × 186,626,248.20
  4. Step 4: Simplify right side
    646,673,070.60x = 181,029,253,467,077,568
  5. Step 5: Solve for x
    x = 181,029,253,467,077,568/646,673,070.60
  6. Step 6: Final answer
    x = 279,939,372.30

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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.