Home / 897,378.96-1,238,386.86-489,489.54

Finding the Fourth Proportional to 897,378.96, 1,238,386.86 and 489,489.54

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Solution

The fourth proportional to 897,378.96, 1,238,386.86 and 489,489.54 is: 675,497.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,378.96 : 1,238,386.86 = 489,489.54 : x
  2. Step 2: Convert to fraction form
    897,378.96/1,238,386.86 = 489,489.54/x
  3. Step 3: Cross multiply
    897,378.96x = 1,238,386.86 × 489,489.54
  4. Step 4: Simplify right side
    897,378.96x = 606,177,414,443.45
  5. Step 5: Solve for x
    x = 606,177,414,443.45/897,378.96
  6. Step 6: Final answer
    x = 675,497.69

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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.