Home / 897,309.89-1,238,302.41-489,411.74

Finding the Fourth Proportional to 897,309.89, 1,238,302.41 and 489,411.74

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Solution

The fourth proportional to 897,309.89, 1,238,302.41 and 489,411.74 is: 675,396.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,309.89 : 1,238,302.41 = 489,411.74 : x
  2. Step 2: Convert to fraction form
    897,309.89/1,238,302.41 = 489,411.74/x
  3. Step 3: Cross multiply
    897,309.89x = 1,238,302.41 × 489,411.74
  4. Step 4: Simplify right side
    897,309.89x = 606,039,734,172.25
  5. Step 5: Solve for x
    x = 606,039,734,172.25/897,309.89
  6. Step 6: Final answer
    x = 675,396.25

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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.