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Finding the Fourth Proportional to 528,649.56, 729,362.75 and 299,184.05

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Solution

The fourth proportional to 528,649.56, 729,362.75 and 299,184.05 is: 412,775.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,649.56 : 729,362.75 = 299,184.05 : x
  2. Step 2: Convert to fraction form
    528,649.56/729,362.75 = 299,184.05/x
  3. Step 3: Cross multiply
    528,649.56x = 729,362.75 × 299,184.05
  4. Step 4: Simplify right side
    528,649.56x = 218,213,701,791.62
  5. Step 5: Solve for x
    x = 218,213,701,791.62/528,649.56
  6. Step 6: Final answer
    x = 412,775.72

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1.5x scale

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.