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Finding the Fourth Proportional to 528,603.67, 729,141.24 and 313,591.50

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Solution

The fourth proportional to 528,603.67, 729,141.24 and 313,591.50 is: 432,559.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,603.67 : 729,141.24 = 313,591.50 : x
  2. Step 2: Convert to fraction form
    528,603.67/729,141.24 = 313,591.50/x
  3. Step 3: Cross multiply
    528,603.67x = 729,141.24 × 313,591.50
  4. Step 4: Simplify right side
    528,603.67x = 228,652,496,339.43
  5. Step 5: Solve for x
    x = 228,652,496,339.43/528,603.67
  6. Step 6: Final answer
    x = 432,559.42

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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.