Home / 897,378.60-1,238,386.34-489,489.22

Finding the Fourth Proportional to 897,378.60, 1,238,386.34 and 489,489.22

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Solution

The fourth proportional to 897,378.60, 1,238,386.34 and 489,489.22 is: 675,497.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,378.60 : 1,238,386.34 = 489,489.22 : x
  2. Step 2: Convert to fraction form
    897,378.60/1,238,386.34 = 489,489.22/x
  3. Step 3: Cross multiply
    897,378.60x = 1,238,386.34 × 489,489.22
  4. Step 4: Simplify right side
    897,378.60x = 606,176,763,625.26
  5. Step 5: Solve for x
    x = 606,176,763,625.26/897,378.60
  6. Step 6: Final answer
    x = 675,497.24

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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.