Home / 1,138,622,798.79-1,708,167,143.77-391,541,544.54

Finding the Fourth Proportional to 1,138,622,798.79, 1,708,167,143.77 and 391,541,544.54

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Solution

The fourth proportional to 1,138,622,798.79, 1,708,167,143.77 and 391,541,544.54 is: 587,392,420.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,622,798.79 : 1,708,167,143.77 = 391,541,544.54 : x
  2. Step 2: Convert to fraction form
    1,138,622,798.79/1,708,167,143.77 = 391,541,544.54/x
  3. Step 3: Cross multiply
    1,138,622,798.79x = 1,708,167,143.77 × 391,541,544.54
  4. Step 4: Simplify right side
    1,138,622,798.79x = 668,818,401,809,612,800
  5. Step 5: Solve for x
    x = 668,818,401,809,612,800/1,138,622,798.79
  6. Step 6: Final answer
    x = 587,392,420.49

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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.