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Finding the Fourth Proportional to 515,640.35, 711,714.48 and 352,362.98

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Solution

The fourth proportional to 515,640.35, 711,714.48 and 352,362.98 is: 486,350.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,640.35 : 711,714.48 = 352,362.98 : x
  2. Step 2: Convert to fraction form
    515,640.35/711,714.48 = 352,362.98/x
  3. Step 3: Cross multiply
    515,640.35x = 711,714.48 × 352,362.98
  4. Step 4: Simplify right side
    515,640.35x = 250,781,831,523.38
  5. Step 5: Solve for x
    x = 250,781,831,523.38/515,640.35
  6. Step 6: Final answer
    x = 486,350.29

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1.5x scale

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.