Home / 1,119,318.79-1,678,971.35-320,601.78

Finding the Fourth Proportional to 1,119,318.79, 1,678,971.35 and 320,601.78

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Solution

The fourth proportional to 1,119,318.79, 1,678,971.35 and 320,601.78 is: 480,900.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,318.79 : 1,678,971.35 = 320,601.78 : x
  2. Step 2: Convert to fraction form
    1,119,318.79/1,678,971.35 = 320,601.78/x
  3. Step 3: Cross multiply
    1,119,318.79x = 1,678,971.35 × 320,601.78
  4. Step 4: Simplify right side
    1,119,318.79x = 538,281,208,072.14
  5. Step 5: Solve for x
    x = 538,281,208,072.14/1,119,318.79
  6. Step 6: Final answer
    x = 480,900.72

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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.