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Finding the Fourth Proportional to 620,712,609.64, 931,008,457.68 and 252,269,652.76

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Solution

The fourth proportional to 620,712,609.64, 931,008,457.68 and 252,269,652.76 is: 378,379,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,712,609.64 : 931,008,457.68 = 252,269,652.76 : x
  2. Step 2: Convert to fraction form
    620,712,609.64/931,008,457.68 = 252,269,652.76/x
  3. Step 3: Cross multiply
    620,712,609.64x = 931,008,457.68 × 252,269,652.76
  4. Step 4: Simplify right side
    620,712,609.64x = 234,865,180,335,556,736
  5. Step 5: Solve for x
    x = 234,865,180,335,556,736/620,712,609.64
  6. Step 6: Final answer
    x = 378,379,908.33

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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.