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Finding the Fourth Proportional to 804,389.88, 1,206,740.34 and 305,715

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Solution

The fourth proportional to 804,389.88, 1,206,740.34 and 305,715 is: 458,631.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,389.88 : 1,206,740.34 = 305,715 : x
  2. Step 2: Convert to fraction form
    804,389.88/1,206,740.34 = 305,715/x
  3. Step 3: Cross multiply
    804,389.88x = 1,206,740.34 × 305,715
  4. Step 4: Simplify right side
    804,389.88x = 368,918,623,043.10
  5. Step 5: Solve for x
    x = 368,918,623,043.10/804,389.88
  6. Step 6: Final answer
    x = 458,631.61

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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.