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Finding the Fourth Proportional to 529,434.43, 730,624.08 and 287,716.94

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Solution

The fourth proportional to 529,434.43, 730,624.08 and 287,716.94 is: 397,051.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,434.43 : 730,624.08 = 287,716.94 : x
  2. Step 2: Convert to fraction form
    529,434.43/730,624.08 = 287,716.94/x
  3. Step 3: Cross multiply
    529,434.43x = 730,624.08 × 287,716.94
  4. Step 4: Simplify right side
    529,434.43x = 210,212,920,271.08
  5. Step 5: Solve for x
    x = 210,212,920,271.08/529,434.43
  6. Step 6: Final answer
    x = 397,051.85

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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.