Home / 919,052.80-1,378,579.20-665,142.10

Finding the Fourth Proportional to 919,052.80, 1,378,579.20 and 665,142.10

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Solution

The fourth proportional to 919,052.80, 1,378,579.20 and 665,142.10 is: 997,713.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,052.80 : 1,378,579.20 = 665,142.10 : x
  2. Step 2: Convert to fraction form
    919,052.80/1,378,579.20 = 665,142.10/x
  3. Step 3: Cross multiply
    919,052.80x = 1,378,579.20 × 665,142.10
  4. Step 4: Simplify right side
    919,052.80x = 916,951,064,104.32
  5. Step 5: Solve for x
    x = 916,951,064,104.32/919,052.80
  6. Step 6: Final answer
    x = 997,713.15

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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.