Home / 430,982.48-646,473.30-115,430.78

Finding the Fourth Proportional to 430,982.48, 646,473.30 and 115,430.78

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Solution

The fourth proportional to 430,982.48, 646,473.30 and 115,430.78 is: 173,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,982.48 : 646,473.30 = 115,430.78 : x
  2. Step 2: Convert to fraction form
    430,982.48/646,473.30 = 115,430.78/x
  3. Step 3: Cross multiply
    430,982.48x = 646,473.30 × 115,430.78
  4. Step 4: Simplify right side
    430,982.48x = 74,622,914,035.81
  5. Step 5: Solve for x
    x = 74,622,914,035.81/430,982.48
  6. Step 6: Final answer
    x = 173,146.05

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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.