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Finding the Fourth Proportional to 528,940.74, 729,955.18 and 299,494.37

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Solution

The fourth proportional to 528,940.74, 729,955.18 and 299,494.37 is: 413,311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,940.74 : 729,955.18 = 299,494.37 : x
  2. Step 2: Convert to fraction form
    528,940.74/729,955.18 = 299,494.37/x
  3. Step 3: Cross multiply
    528,940.74x = 729,955.18 × 299,494.37
  4. Step 4: Simplify right side
    528,940.74x = 218,617,468,961.59
  5. Step 5: Solve for x
    x = 218,617,468,961.59/528,940.74
  6. Step 6: Final answer
    x = 413,311.83

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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.