Home / 780,023,682.10-1,170,035,523.15-320,291,787.70

Finding the Fourth Proportional to 780,023,682.10, 1,170,035,523.15 and 320,291,787.70

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Solution

The fourth proportional to 780,023,682.10, 1,170,035,523.15 and 320,291,787.70 is: 480,437,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,023,682.10 : 1,170,035,523.15 = 320,291,787.70 : x
  2. Step 2: Convert to fraction form
    780,023,682.10/1,170,035,523.15 = 320,291,787.70/x
  3. Step 3: Cross multiply
    780,023,682.10x = 1,170,035,523.15 × 320,291,787.70
  4. Step 4: Simplify right side
    780,023,682.10x = 374,752,769,382,218,240
  5. Step 5: Solve for x
    x = 374,752,769,382,218,240/780,023,682.10
  6. Step 6: Final answer
    x = 480,437,681.55

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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.