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Finding the Fourth Proportional to 413,977.60, 620,966.40 and 118,489.60

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Solution

The fourth proportional to 413,977.60, 620,966.40 and 118,489.60 is: 177,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,977.60 : 620,966.40 = 118,489.60 : x
  2. Step 2: Convert to fraction form
    413,977.60/620,966.40 = 118,489.60/x
  3. Step 3: Cross multiply
    413,977.60x = 620,966.40 × 118,489.60
  4. Step 4: Simplify right side
    413,977.60x = 73,578,060,349.44
  5. Step 5: Solve for x
    x = 73,578,060,349.44/413,977.60
  6. Step 6: Final answer
    x = 177,734.40

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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.