Home / 1,428,000.70-2,142,001.05-628,870.90

Finding the Fourth Proportional to 1,428,000.70, 2,142,001.05 and 628,870.90

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Solution

The fourth proportional to 1,428,000.70, 2,142,001.05 and 628,870.90 is: 943,306.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,000.70 : 2,142,001.05 = 628,870.90 : x
  2. Step 2: Convert to fraction form
    1,428,000.70/2,142,001.05 = 628,870.90/x
  3. Step 3: Cross multiply
    1,428,000.70x = 2,142,001.05 × 628,870.90
  4. Step 4: Simplify right side
    1,428,000.70x = 1,347,042,128,114.44
  5. Step 5: Solve for x
    x = 1,347,042,128,114.44/1,428,000.70
  6. Step 6: Final answer
    x = 943,306.35

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Similar ratio
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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.