Home / 646,828.80-969,897.60-272,428.80

Finding the Fourth Proportional to 646,828.80, 969,897.60 and 272,428.80

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Solution

The fourth proportional to 646,828.80, 969,897.60 and 272,428.80 is: 408,497.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,828.80 : 969,897.60 = 272,428.80 : x
  2. Step 2: Convert to fraction form
    646,828.80/969,897.60 = 272,428.80/x
  3. Step 3: Cross multiply
    646,828.80x = 969,897.60 × 272,428.80
  4. Step 4: Simplify right side
    646,828.80x = 264,228,039,290.88
  5. Step 5: Solve for x
    x = 264,228,039,290.88/646,828.80
  6. Step 6: Final answer
    x = 408,497.64

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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.