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Finding the Fourth Proportional to 530,038.52, 731,449.57 and 300,640.44

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Solution

The fourth proportional to 530,038.52, 731,449.57 and 300,640.44 is: 414,881.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,038.52 : 731,449.57 = 300,640.44 : x
  2. Step 2: Convert to fraction form
    530,038.52/731,449.57 = 300,640.44/x
  3. Step 3: Cross multiply
    530,038.52x = 731,449.57 × 300,640.44
  4. Step 4: Simplify right side
    530,038.52x = 219,903,320,562.61
  5. Step 5: Solve for x
    x = 219,903,320,562.61/530,038.52
  6. Step 6: Final answer
    x = 414,881.77

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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.