Home / 517,311,922,707.45-713,882,855,855.74-288,944,497,409.85

Finding the Fourth Proportional to 517,311,922,707.45, 713,882,855,855.74 and 288,944,497,409.85

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Solution

The fourth proportional to 517,311,922,707.45, 713,882,855,855.74 and 288,944,497,409.85 is: 398,739,162,853.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,311,922,707.45 : 713,882,855,855.74 = 288,944,497,409.85 : x
  2. Step 2: Convert to fraction form
    517,311,922,707.45/713,882,855,855.74 = 288,944,497,409.85/x
  3. Step 3: Cross multiply
    517,311,922,707.45x = 713,882,855,855.74 × 288,944,497,409.85
  4. Step 4: Simplify right side
    517,311,922,707.45x = 206,272,522,994,745,165,742,080
  5. Step 5: Solve for x
    x = 206,272,522,994,745,165,742,080/517,311,922,707.45
  6. Step 6: Final answer
    x = 398,739,162,853.97

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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.