Home / 639,288.80-882,236.40-352,831.04

Finding the Fourth Proportional to 639,288.80, 882,236.40 and 352,831.04

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Solution

The fourth proportional to 639,288.80, 882,236.40 and 352,831.04 is: 486,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,288.80 : 882,236.40 = 352,831.04 : x
  2. Step 2: Convert to fraction form
    639,288.80/882,236.40 = 352,831.04/x
  3. Step 3: Cross multiply
    639,288.80x = 882,236.40 × 352,831.04
  4. Step 4: Simplify right side
    639,288.80x = 311,280,386,537.86
  5. Step 5: Solve for x
    x = 311,280,386,537.86/639,288.80
  6. Step 6: Final answer
    x = 486,916.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.