Home / 500,855,816.97-691,077,525.17-289,158,979.16

Finding the Fourth Proportional to 500,855,816.97, 691,077,525.17 and 289,158,979.16

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Solution

The fourth proportional to 500,855,816.97, 691,077,525.17 and 289,158,979.16 is: 398,979,636.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,855,816.97 : 691,077,525.17 = 289,158,979.16 : x
  2. Step 2: Convert to fraction form
    500,855,816.97/691,077,525.17 = 289,158,979.16/x
  3. Step 3: Cross multiply
    500,855,816.97x = 691,077,525.17 × 289,158,979.16
  4. Step 4: Simplify right side
    500,855,816.97x = 199,831,271,698,858,304
  5. Step 5: Solve for x
    x = 199,831,271,698,858,304/500,855,816.97
  6. Step 6: Final answer
    x = 398,979,636.31

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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.