Home / 1,315,334,589.93-1,815,161,463.05-720,640,169.37

Finding the Fourth Proportional to 1,315,334,589.93, 1,815,161,463.05 and 720,640,169.37

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Solution

The fourth proportional to 1,315,334,589.93, 1,815,161,463.05 and 720,640,169.37 is: 994,483,285.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,334,589.93 : 1,815,161,463.05 = 720,640,169.37 : x
  2. Step 2: Convert to fraction form
    1,315,334,589.93/1,815,161,463.05 = 720,640,169.37/x
  3. Step 3: Cross multiply
    1,315,334,589.93x = 1,815,161,463.05 × 720,640,169.37
  4. Step 4: Simplify right side
    1,315,334,589.93x = 1,308,078,264,162,645,760
  5. Step 5: Solve for x
    x = 1,308,078,264,162,645,760/1,315,334,589.93
  6. Step 6: Final answer
    x = 994,483,285.22

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1.5x scale

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.