Home / 479,393,279.63-661,374,494.41-278,415,941.72

Finding the Fourth Proportional to 479,393,279.63, 661,374,494.41 and 278,415,941.72

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Solution

The fourth proportional to 479,393,279.63, 661,374,494.41 and 278,415,941.72 is: 384,104,680.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,393,279.63 : 661,374,494.41 = 278,415,941.72 : x
  2. Step 2: Convert to fraction form
    479,393,279.63/661,374,494.41 = 278,415,941.72/x
  3. Step 3: Cross multiply
    479,393,279.63x = 661,374,494.41 × 278,415,941.72
  4. Step 4: Simplify right side
    479,393,279.63x = 184,137,202,690,749,024
  5. Step 5: Solve for x
    x = 184,137,202,690,749,024/479,393,279.63
  6. Step 6: Final answer
    x = 384,104,680.89

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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.