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Finding the Fourth Proportional to 524,243.60, 785,328.60 and 486,918.80

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Solution

The fourth proportional to 524,243.60, 785,328.60 and 486,918.80 is: 729,415.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,243.60 : 785,328.60 = 486,918.80 : x
  2. Step 2: Convert to fraction form
    524,243.60/785,328.60 = 486,918.80/x
  3. Step 3: Cross multiply
    524,243.60x = 785,328.60 × 486,918.80
  4. Step 4: Simplify right side
    524,243.60x = 382,391,259,517.68
  5. Step 5: Solve for x
    x = 382,391,259,517.68/524,243.60
  6. Step 6: Final answer
    x = 729,415.22

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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.