Home / 418,742,195.40-628,136,912.70-127,618,815.60

Finding the Fourth Proportional to 418,742,195.40, 628,136,912.70 and 127,618,815.60

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Solution

The fourth proportional to 418,742,195.40, 628,136,912.70 and 127,618,815.60 is: 191,435,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,742,195.40 : 628,136,912.70 = 127,618,815.60 : x
  2. Step 2: Convert to fraction form
    418,742,195.40/628,136,912.70 = 127,618,815.60/x
  3. Step 3: Cross multiply
    418,742,195.40x = 628,136,912.70 × 127,618,815.60
  4. Step 4: Simplify right side
    418,742,195.40x = 80,162,088,833,414,608
  5. Step 5: Solve for x
    x = 80,162,088,833,414,608/418,742,195.40
  6. Step 6: Final answer
    x = 191,435,421.88

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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.