Home / 643,802.60-965,531.10-269,748.20

Finding the Fourth Proportional to 643,802.60, 965,531.10 and 269,748.20

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Solution

The fourth proportional to 643,802.60, 965,531.10 and 269,748.20 is: 404,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,802.60 : 965,531.10 = 269,748.20 : x
  2. Step 2: Convert to fraction form
    643,802.60/965,531.10 = 269,748.20/x
  3. Step 3: Cross multiply
    643,802.60x = 965,531.10 × 269,748.20
  4. Step 4: Simplify right side
    643,802.60x = 260,450,276,269.02
  5. Step 5: Solve for x
    x = 260,450,276,269.02/643,802.60
  6. Step 6: Final answer
    x = 404,549.90

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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.