Home / 1,127,352,169.80-1,690,622,541.90-390,221,791.56

Finding the Fourth Proportional to 1,127,352,169.80, 1,690,622,541.90 and 390,221,791.56

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Solution

The fourth proportional to 1,127,352,169.80, 1,690,622,541.90 and 390,221,791.56 is: 585,192,253.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,352,169.80 : 1,690,622,541.90 = 390,221,791.56 : x
  2. Step 2: Convert to fraction form
    1,127,352,169.80/1,690,622,541.90 = 390,221,791.56/x
  3. Step 3: Cross multiply
    1,127,352,169.80x = 1,690,622,541.90 × 390,221,791.56
  4. Step 4: Simplify right side
    1,127,352,169.80x = 659,717,757,151,939,200
  5. Step 5: Solve for x
    x = 659,717,757,151,939,200/1,127,352,169.80
  6. Step 6: Final answer
    x = 585,192,253.87

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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.