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Finding the Fourth Proportional to 525,481.96, 724,905.30 and 310,518.04

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Solution

The fourth proportional to 525,481.96, 724,905.30 and 310,518.04 is: 428,361.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,481.96 : 724,905.30 = 310,518.04 : x
  2. Step 2: Convert to fraction form
    525,481.96/724,905.30 = 310,518.04/x
  3. Step 3: Cross multiply
    525,481.96x = 724,905.30 × 310,518.04
  4. Step 4: Simplify right side
    525,481.96x = 225,096,172,941.61
  5. Step 5: Solve for x
    x = 225,096,172,941.61/525,481.96
  6. Step 6: Final answer
    x = 428,361.37

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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.