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Finding the Third Proportional to 402,831.50 and 847,135

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Solution

The third proportional to 402,831.50 and 847,135 is: 1,781,483.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,831.50 : 847,135 = 847,135 : x
  2. Step 2: Convert to fraction form
    402,831.50/847,135 = 847,135/x
  3. Step 3: Cross multiply
    402,831.50x = 847,135 × 847,135
  4. Step 4: Simplify right side
    402,831.50x = 717,637,708,225
  5. Step 5: Solve for x
    x = 717,637,708,225/402,831.50
  6. Step 6: Final answer
    x = 1,781,483.59

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.