Home / 718,197,866,143.87-991,112,414,958.66-405,404,089,397.65

Finding the Fourth Proportional to 718,197,866,143.87, 991,112,414,958.66 and 405,404,089,397.65

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Solution

The fourth proportional to 718,197,866,143.87, 991,112,414,958.66 and 405,404,089,397.65 is: 559,457,281,924.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,197,866,143.87 : 991,112,414,958.66 = 405,404,089,397.65 : x
  2. Step 2: Convert to fraction form
    718,197,866,143.87/991,112,414,958.66 = 405,404,089,397.65/x
  3. Step 3: Cross multiply
    718,197,866,143.87x = 991,112,414,958.66 × 405,404,089,397.65
  4. Step 4: Simplify right side
    718,197,866,143.87x = 401,801,026,077,021,435,854,848
  5. Step 5: Solve for x
    x = 401,801,026,077,021,435,854,848/718,197,866,143.87
  6. Step 6: Final answer
    x = 559,457,281,924.77

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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.