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Finding the Fourth Proportional to 872,487.70, 1,308,817.95 and 303,781.30

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Solution

The fourth proportional to 872,487.70, 1,308,817.95 and 303,781.30 is: 455,702.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,487.70 : 1,308,817.95 = 303,781.30 : x
  2. Step 2: Convert to fraction form
    872,487.70/1,308,817.95 = 303,781.30/x
  3. Step 3: Cross multiply
    872,487.70x = 1,308,817.95 × 303,781.30
  4. Step 4: Simplify right side
    872,487.70x = 397,594,418,314.34
  5. Step 5: Solve for x
    x = 397,594,418,314.34/872,487.70
  6. Step 6: Final answer
    x = 455,702.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.