Home / 660,139,340.40-990,846,739.80-401,859,014.40

Finding the Fourth Proportional to 660,139,340.40, 990,846,739.80 and 401,859,014.40

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Solution

The fourth proportional to 660,139,340.40, 990,846,739.80 and 401,859,014.40 is: 603,176,738.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,139,340.40 : 990,846,739.80 = 401,859,014.40 : x
  2. Step 2: Convert to fraction form
    660,139,340.40/990,846,739.80 = 401,859,014.40/x
  3. Step 3: Cross multiply
    660,139,340.40x = 990,846,739.80 × 401,859,014.40
  4. Step 4: Simplify right side
    660,139,340.40x = 398,180,694,277,481,216
  5. Step 5: Solve for x
    x = 398,180,694,277,481,216/660,139,340.40
  6. Step 6: Final answer
    x = 603,176,738.47

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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.