Home / 455,937,996.39-683,918,191.31-128,411,293.55

Finding the Fourth Proportional to 455,937,996.39, 683,918,191.31 and 128,411,293.55

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Solution

The fourth proportional to 455,937,996.39, 683,918,191.31 and 128,411,293.55 is: 192,620,093.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,937,996.39 : 683,918,191.31 = 128,411,293.55 : x
  2. Step 2: Convert to fraction form
    455,937,996.39/683,918,191.31 = 128,411,293.55/x
  3. Step 3: Cross multiply
    455,937,996.39x = 683,918,191.31 × 128,411,293.55
  4. Step 4: Simplify right side
    455,937,996.39x = 87,822,819,625,073,872
  5. Step 5: Solve for x
    x = 87,822,819,625,073,872/455,937,996.39
  6. Step 6: Final answer
    x = 192,620,093.79

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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.