Home / 432,051.20-646,942.80-305,005.40

Finding the Fourth Proportional to 432,051.20, 646,942.80 and 305,005.40

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Solution

The fourth proportional to 432,051.20, 646,942.80 and 305,005.40 is: 456,707.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,051.20 : 646,942.80 = 305,005.40 : x
  2. Step 2: Convert to fraction form
    432,051.20/646,942.80 = 305,005.40/x
  3. Step 3: Cross multiply
    432,051.20x = 646,942.80 × 305,005.40
  4. Step 4: Simplify right side
    432,051.20x = 197,321,047,491.12
  5. Step 5: Solve for x
    x = 197,321,047,491.12/432,051.20
  6. Step 6: Final answer
    x = 456,707.56

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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.