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Finding the Fourth Proportional to 488,816.38, 674,565 and 284,987.98

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Solution

The fourth proportional to 488,816.38, 674,565 and 284,987.98 is: 393,282.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,816.38 : 674,565 = 284,987.98 : x
  2. Step 2: Convert to fraction form
    488,816.38/674,565 = 284,987.98/x
  3. Step 3: Cross multiply
    488,816.38x = 674,565 × 284,987.98
  4. Step 4: Simplify right side
    488,816.38x = 192,242,913,355.88
  5. Step 5: Solve for x
    x = 192,242,913,355.88/488,816.38
  6. Step 6: Final answer
    x = 393,282.47

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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.