Home / 915,941,120.58-1,263,997,789.52-498,252,409.43

Finding the Fourth Proportional to 915,941,120.58, 1,263,997,789.52 and 498,252,409.43

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Solution

The fourth proportional to 915,941,120.58, 1,263,997,789.52 and 498,252,409.43 is: 687,587,804.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,941,120.58 : 1,263,997,789.52 = 498,252,409.43 : x
  2. Step 2: Convert to fraction form
    915,941,120.58/1,263,997,789.52 = 498,252,409.43/x
  3. Step 3: Cross multiply
    915,941,120.58x = 1,263,997,789.52 × 498,252,409.43
  4. Step 4: Simplify right side
    915,941,120.58x = 629,789,944,133,722,880
  5. Step 5: Solve for x
    x = 629,789,944,133,722,880/915,941,120.58
  6. Step 6: Final answer
    x = 687,587,804.48

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1.5x scale

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.