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Finding the Fourth Proportional to 567,018.86, 782,485.77 and 312,370.04

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Solution

The fourth proportional to 567,018.86, 782,485.77 and 312,370.04 is: 431,070.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,018.86 : 782,485.77 = 312,370.04 : x
  2. Step 2: Convert to fraction form
    567,018.86/782,485.77 = 312,370.04/x
  3. Step 3: Cross multiply
    567,018.86x = 782,485.77 × 312,370.04
  4. Step 4: Simplify right side
    567,018.86x = 244,425,107,361.90
  5. Step 5: Solve for x
    x = 244,425,107,361.90/567,018.86
  6. Step 6: Final answer
    x = 431,070.51

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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.