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Finding the Fourth Proportional to 528,503.66, 729,324.94 and 299,056.77

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Solution

The fourth proportional to 528,503.66, 729,324.94 and 299,056.77 is: 412,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,503.66 : 729,324.94 = 299,056.77 : x
  2. Step 2: Convert to fraction form
    528,503.66/729,324.94 = 299,056.77/x
  3. Step 3: Cross multiply
    528,503.66x = 729,324.94 × 299,056.77
  4. Step 4: Simplify right side
    528,503.66x = 218,109,560,834.45
  5. Step 5: Solve for x
    x = 218,109,560,834.45/528,503.66
  6. Step 6: Final answer
    x = 412,692.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.