Home / 418,928,136.30-628,675,639.65-188,778,753.90

Finding the Fourth Proportional to 418,928,136.30, 628,675,639.65 and 188,778,753.90

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Solution

The fourth proportional to 418,928,136.30, 628,675,639.65 and 188,778,753.90 is: 283,295,853.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,928,136.30 : 628,675,639.65 = 188,778,753.90 : x
  2. Step 2: Convert to fraction form
    418,928,136.30/628,675,639.65 = 188,778,753.90/x
  3. Step 3: Cross multiply
    418,928,136.30x = 628,675,639.65 × 188,778,753.90
  4. Step 4: Simplify right side
    418,928,136.30x = 118,680,603,860,412,432
  5. Step 5: Solve for x
    x = 118,680,603,860,412,432/418,928,136.30
  6. Step 6: Final answer
    x = 283,295,853.34

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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.