Home / 528,822.72-729,820.55-299,420.43

Finding the Fourth Proportional to 528,822.72, 729,820.55 and 299,420.43

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Solution

The fourth proportional to 528,822.72, 729,820.55 and 299,420.43 is: 413,225.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,822.72 : 729,820.55 = 299,420.43 : x
  2. Step 2: Convert to fraction form
    528,822.72/729,820.55 = 299,420.43/x
  3. Step 3: Cross multiply
    528,822.72x = 729,820.55 × 299,420.43
  4. Step 4: Simplify right side
    528,822.72x = 218,523,181,406.73
  5. Step 5: Solve for x
    x = 218,523,181,406.73/528,822.72
  6. Step 6: Final answer
    x = 413,225.78

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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.