Home / 1,188,912.60-1,783,306.26-390,088.98

Finding the Fourth Proportional to 1,188,912.60, 1,783,306.26 and 390,088.98

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Solution

The fourth proportional to 1,188,912.60, 1,783,306.26 and 390,088.98 is: 585,112.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,912.60 : 1,783,306.26 = 390,088.98 : x
  2. Step 2: Convert to fraction form
    1,188,912.60/1,783,306.26 = 390,088.98/x
  3. Step 3: Cross multiply
    1,188,912.60x = 1,783,306.26 × 390,088.98
  4. Step 4: Simplify right side
    1,188,912.60x = 695,648,119,991.02
  5. Step 5: Solve for x
    x = 695,648,119,991.02/1,188,912.60
  6. Step 6: Final answer
    x = 585,112.92

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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.