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Finding the Fourth Proportional to 877,978, 1,211,661.48 and 495,994.96

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Solution

The fourth proportional to 877,978, 1,211,661.48 and 495,994.96 is: 684,502.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,978 : 1,211,661.48 = 495,994.96 : x
  2. Step 2: Convert to fraction form
    877,978/1,211,661.48 = 495,994.96/x
  3. Step 3: Cross multiply
    877,978x = 1,211,661.48 × 495,994.96
  4. Step 4: Simplify right side
    877,978x = 600,977,987,306.14
  5. Step 5: Solve for x
    x = 600,977,987,306.14/877,978
  6. Step 6: Final answer
    x = 684,502.33

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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.