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Finding the Fourth Proportional to 916,900.80, 1,372,240.80 and 804,926.40

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Solution

The fourth proportional to 916,900.80, 1,372,240.80 and 804,926.40 is: 1,204,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,900.80 : 1,372,240.80 = 804,926.40 : x
  2. Step 2: Convert to fraction form
    916,900.80/1,372,240.80 = 804,926.40/x
  3. Step 3: Cross multiply
    916,900.80x = 1,372,240.80 × 804,926.40
  4. Step 4: Simplify right side
    916,900.80x = 1,104,552,847,077.12
  5. Step 5: Solve for x
    x = 1,104,552,847,077.12/916,900.80
  6. Step 6: Final answer
    x = 1,204,659.05

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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.