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Finding the Fourth Proportional to 989,235, 1,482,855.48 and 389,964.24

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Solution

The fourth proportional to 989,235, 1,482,855.48 and 389,964.24 is: 584,553.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,235 : 1,482,855.48 = 389,964.24 : x
  2. Step 2: Convert to fraction form
    989,235/1,482,855.48 = 389,964.24/x
  3. Step 3: Cross multiply
    989,235x = 1,482,855.48 × 389,964.24
  4. Step 4: Simplify right side
    989,235x = 578,260,610,288.04
  5. Step 5: Solve for x
    x = 578,260,610,288.04/989,235
  6. Step 6: Final answer
    x = 584,553.33

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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.