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Finding the Fourth Proportional to 403,590,412.60, 556,954,764.30 and 217,951,411.90

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Solution

The fourth proportional to 403,590,412.60, 556,954,764.30 and 217,951,411.90 is: 300,772,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,590,412.60 : 556,954,764.30 = 217,951,411.90 : x
  2. Step 2: Convert to fraction form
    403,590,412.60/556,954,764.30 = 217,951,411.90/x
  3. Step 3: Cross multiply
    403,590,412.60x = 556,954,764.30 × 217,951,411.90
  4. Step 4: Simplify right side
    403,590,412.60x = 121,389,077,243,616,704
  5. Step 5: Solve for x
    x = 121,389,077,243,616,704/403,590,412.60
  6. Step 6: Final answer
    x = 300,772,945.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.