Home / 432,583.70-648,875.40-315,003.28

Finding the Fourth Proportional to 432,583.70, 648,875.40 and 315,003.28

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Solution

The fourth proportional to 432,583.70, 648,875.40 and 315,003.28 is: 472,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,583.70 : 648,875.40 = 315,003.28 : x
  2. Step 2: Convert to fraction form
    432,583.70/648,875.40 = 315,003.28/x
  3. Step 3: Cross multiply
    432,583.70x = 648,875.40 × 315,003.28
  4. Step 4: Simplify right side
    432,583.70x = 204,397,879,311.31
  5. Step 5: Solve for x
    x = 204,397,879,311.31/432,583.70
  6. Step 6: Final answer
    x = 472,504.81

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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.