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Finding the Fourth Proportional to 989,236, 1,482,856.98 and 389,965.24

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Solution

The fourth proportional to 989,236, 1,482,856.98 and 389,965.24 is: 584,554.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,236 : 1,482,856.98 = 389,965.24 : x
  2. Step 2: Convert to fraction form
    989,236/1,482,856.98 = 389,965.24/x
  3. Step 3: Cross multiply
    989,236x = 1,482,856.98 × 389,965.24
  4. Step 4: Simplify right side
    989,236x = 578,262,678,091.38
  5. Step 5: Solve for x
    x = 578,262,678,091.38/989,236
  6. Step 6: Final answer
    x = 584,554.83

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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.