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Finding the Fourth Proportional to 651,344.40, 978,053.40 and 441,910.80

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Solution

The fourth proportional to 651,344.40, 978,053.40 and 441,910.80 is: 663,569.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,344.40 : 978,053.40 = 441,910.80 : x
  2. Step 2: Convert to fraction form
    651,344.40/978,053.40 = 441,910.80/x
  3. Step 3: Cross multiply
    651,344.40x = 978,053.40 × 441,910.80
  4. Step 4: Simplify right side
    651,344.40x = 432,212,360,436.72
  5. Step 5: Solve for x
    x = 432,212,360,436.72/651,344.40
  6. Step 6: Final answer
    x = 663,569.63

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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.