Home / 674,825.60-1,012,238.40-643,721.60

Finding the Fourth Proportional to 674,825.60, 1,012,238.40 and 643,721.60

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Solution

The fourth proportional to 674,825.60, 1,012,238.40 and 643,721.60 is: 965,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,825.60 : 1,012,238.40 = 643,721.60 : x
  2. Step 2: Convert to fraction form
    674,825.60/1,012,238.40 = 643,721.60/x
  3. Step 3: Cross multiply
    674,825.60x = 1,012,238.40 × 643,721.60
  4. Step 4: Simplify right side
    674,825.60x = 651,599,722,429.44
  5. Step 5: Solve for x
    x = 651,599,722,429.44/674,825.60
  6. Step 6: Final answer
    x = 965,582.40

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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.