Home / 1,189,002.60-1,783,719.90-390,061.80

Finding the Fourth Proportional to 1,189,002.60, 1,783,719.90 and 390,061.80

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Solution

The fourth proportional to 1,189,002.60, 1,783,719.90 and 390,061.80 is: 585,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,002.60 : 1,783,719.90 = 390,061.80 : x
  2. Step 2: Convert to fraction form
    1,189,002.60/1,783,719.90 = 390,061.80/x
  3. Step 3: Cross multiply
    1,189,002.60x = 1,783,719.90 × 390,061.80
  4. Step 4: Simplify right side
    1,189,002.60x = 695,760,994,889.82
  5. Step 5: Solve for x
    x = 695,760,994,889.82/1,189,002.60
  6. Step 6: Final answer
    x = 585,163.56

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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.