Home / 840,554,585.88-1,261,606,933.86-426,322,129.56

Finding the Fourth Proportional to 840,554,585.88, 1,261,606,933.86 and 426,322,129.56

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Solution

The fourth proportional to 840,554,585.88, 1,261,606,933.86 and 426,322,129.56 is: 639,876,295.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,554,585.88 : 1,261,606,933.86 = 426,322,129.56 : x
  2. Step 2: Convert to fraction form
    840,554,585.88/1,261,606,933.86 = 426,322,129.56/x
  3. Step 3: Cross multiply
    840,554,585.88x = 1,261,606,933.86 × 426,322,129.56
  4. Step 4: Simplify right side
    840,554,585.88x = 537,850,954,710,857,216
  5. Step 5: Solve for x
    x = 537,850,954,710,857,216/840,554,585.88
  6. Step 6: Final answer
    x = 639,876,295.66

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1.5x scale

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.