Home / 1,438,780.56-2,158,169.40-427,898.40

Finding the Fourth Proportional to 1,438,780.56, 2,158,169.40 and 427,898.40

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Solution

The fourth proportional to 1,438,780.56, 2,158,169.40 and 427,898.40 is: 641,847.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,780.56 : 2,158,169.40 = 427,898.40 : x
  2. Step 2: Convert to fraction form
    1,438,780.56/2,158,169.40 = 427,898.40/x
  3. Step 3: Cross multiply
    1,438,780.56x = 2,158,169.40 × 427,898.40
  4. Step 4: Simplify right side
    1,438,780.56x = 923,477,233,188.96
  5. Step 5: Solve for x
    x = 923,477,233,188.96/1,438,780.56
  6. Step 6: Final answer
    x = 641,847.17

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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.