Home / 389,918.36-583,546.80-326,809.72

Finding the Fourth Proportional to 389,918.36, 583,546.80 and 326,809.72

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Solution

The fourth proportional to 389,918.36, 583,546.80 and 326,809.72 is: 489,099.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,918.36 : 583,546.80 = 326,809.72 : x
  2. Step 2: Convert to fraction form
    389,918.36/583,546.80 = 326,809.72/x
  3. Step 3: Cross multiply
    389,918.36x = 583,546.80 × 326,809.72
  4. Step 4: Simplify right side
    389,918.36x = 190,708,766,314.90
  5. Step 5: Solve for x
    x = 190,708,766,314.90/389,918.36
  6. Step 6: Final answer
    x = 489,099.22

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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.