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Finding the Fourth Proportional to 626,999.60, 940,729.80 and 253,060.40

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Solution

The fourth proportional to 626,999.60, 940,729.80 and 253,060.40 is: 379,683.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,999.60 : 940,729.80 = 253,060.40 : x
  2. Step 2: Convert to fraction form
    626,999.60/940,729.80 = 253,060.40/x
  3. Step 3: Cross multiply
    626,999.60x = 940,729.80 × 253,060.40
  4. Step 4: Simplify right side
    626,999.60x = 238,061,459,479.92
  5. Step 5: Solve for x
    x = 238,061,459,479.92/626,999.60
  6. Step 6: Final answer
    x = 379,683.59

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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.