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Finding the Fourth Proportional to 642,944.76, 964,440.60 and 243,615.28

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Solution

The fourth proportional to 642,944.76, 964,440.60 and 243,615.28 is: 365,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,944.76 : 964,440.60 = 243,615.28 : x
  2. Step 2: Convert to fraction form
    642,944.76/964,440.60 = 243,615.28/x
  3. Step 3: Cross multiply
    642,944.76x = 964,440.60 × 243,615.28
  4. Step 4: Simplify right side
    642,944.76x = 234,952,466,812.37
  5. Step 5: Solve for x
    x = 234,952,466,812.37/642,944.76
  6. Step 6: Final answer
    x = 365,431.81

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1.5x scale

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.