Home / 427,873.14-641,783.79-112,323.06

Finding the Fourth Proportional to 427,873.14, 641,783.79 and 112,323.06

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Solution

The fourth proportional to 427,873.14, 641,783.79 and 112,323.06 is: 168,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,873.14 : 641,783.79 = 112,323.06 : x
  2. Step 2: Convert to fraction form
    427,873.14/641,783.79 = 112,323.06/x
  3. Step 3: Cross multiply
    427,873.14x = 641,783.79 × 112,323.06
  4. Step 4: Simplify right side
    427,873.14x = 72,087,119,151.20
  5. Step 5: Solve for x
    x = 72,087,119,151.20/427,873.14
  6. Step 6: Final answer
    x = 168,477.79

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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.