Home / 418,928,125.80-628,675,623.90-188,778,743.40

Finding the Fourth Proportional to 418,928,125.80, 628,675,623.90 and 188,778,743.40

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Solution

The fourth proportional to 418,928,125.80, 628,675,623.90 and 188,778,743.40 is: 283,295,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,928,125.80 : 628,675,623.90 = 188,778,743.40 : x
  2. Step 2: Convert to fraction form
    418,928,125.80/628,675,623.90 = 188,778,743.40/x
  3. Step 3: Cross multiply
    418,928,125.80x = 628,675,623.90 × 188,778,743.40
  4. Step 4: Simplify right side
    418,928,125.80x = 118,680,594,286,053,008
  5. Step 5: Solve for x
    x = 118,680,594,286,053,008/418,928,125.80
  6. Step 6: Final answer
    x = 283,295,837.58

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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.