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Finding the Fourth Proportional to 456,474.60, 640,114.20 and 456,474.60

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Solution

The fourth proportional to 456,474.60, 640,114.20 and 456,474.60 is: 640,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,474.60 : 640,114.20 = 456,474.60 : x
  2. Step 2: Convert to fraction form
    456,474.60/640,114.20 = 456,474.60/x
  3. Step 3: Cross multiply
    456,474.60x = 640,114.20 × 456,474.60
  4. Step 4: Simplify right side
    456,474.60x = 292,195,873,399.32
  5. Step 5: Solve for x
    x = 292,195,873,399.32/456,474.60
  6. Step 6: Final answer
    x = 640,114.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.