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Finding the Fourth Proportional to 897,381.96, 1,238,391 and 489,492.54

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Solution

The fourth proportional to 897,381.96, 1,238,391 and 489,492.54 is: 675,501.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,381.96 : 1,238,391 = 489,492.54 : x
  2. Step 2: Convert to fraction form
    897,381.96/1,238,391 = 489,492.54/x
  3. Step 3: Cross multiply
    897,381.96x = 1,238,391 × 489,492.54
  4. Step 4: Simplify right side
    897,381.96x = 606,183,156,103.14
  5. Step 5: Solve for x
    x = 606,183,156,103.14/897,381.96
  6. Step 6: Final answer
    x = 675,501.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.