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Finding the Fourth Proportional to 528,830.55, 729,794.70 and 299,381.85

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Solution

The fourth proportional to 528,830.55, 729,794.70 and 299,381.85 is: 413,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,830.55 : 729,794.70 = 299,381.85 : x
  2. Step 2: Convert to fraction form
    528,830.55/729,794.70 = 299,381.85/x
  3. Step 3: Cross multiply
    528,830.55x = 729,794.70 × 299,381.85
  4. Step 4: Simplify right side
    528,830.55x = 218,487,287,406.20
  5. Step 5: Solve for x
    x = 218,487,287,406.20/528,830.55
  6. Step 6: Final answer
    x = 413,151.79

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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.