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Finding the Fourth Proportional to 486,060.60, 670,494.06 and 284,817.72

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Solution

The fourth proportional to 486,060.60, 670,494.06 and 284,817.72 is: 392,890.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,060.60 : 670,494.06 = 284,817.72 : x
  2. Step 2: Convert to fraction form
    486,060.60/670,494.06 = 284,817.72/x
  3. Step 3: Cross multiply
    486,060.60x = 670,494.06 × 284,817.72
  4. Step 4: Simplify right side
    486,060.60x = 190,968,589,442.74
  5. Step 5: Solve for x
    x = 190,968,589,442.74/486,060.60
  6. Step 6: Final answer
    x = 392,890.49

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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.