Home / 479,397,280.95-661,380,004.85-278,419,941.63

Finding the Fourth Proportional to 479,397,280.95, 661,380,004.85 and 278,419,941.63

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Solution

The fourth proportional to 479,397,280.95, 661,380,004.85 and 278,419,941.63 is: 384,110,193.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,397,280.95 : 661,380,004.85 = 278,419,941.63 : x
  2. Step 2: Convert to fraction form
    479,397,280.95/661,380,004.85 = 278,419,941.63/x
  3. Step 3: Cross multiply
    479,397,280.95x = 661,380,004.85 × 278,419,941.63
  4. Step 4: Simplify right side
    479,397,280.95x = 184,141,382,344,194,016
  5. Step 5: Solve for x
    x = 184,141,382,344,194,016/479,397,280.95
  6. Step 6: Final answer
    x = 384,110,193.49

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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.