Home / 1,570,930.20-2,167,200.36-989,800.56

Finding the Fourth Proportional to 1,570,930.20, 2,167,200.36 and 989,800.56

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Solution

The fourth proportional to 1,570,930.20, 2,167,200.36 and 989,800.56 is: 1,365,494.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570,930.20 : 2,167,200.36 = 989,800.56 : x
  2. Step 2: Convert to fraction form
    1,570,930.20/2,167,200.36 = 989,800.56/x
  3. Step 3: Cross multiply
    1,570,930.20x = 2,167,200.36 × 989,800.56
  4. Step 4: Simplify right side
    1,570,930.20x = 2,145,096,129,960.20
  5. Step 5: Solve for x
    x = 2,145,096,129,960.20/1,570,930.20
  6. Step 6: Final answer
    x = 1,365,494.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.