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Finding the Fourth Proportional to 504,772.40, 758,211.60 and 426,040.40

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Solution

The fourth proportional to 504,772.40, 758,211.60 and 426,040.40 is: 639,949.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,772.40 : 758,211.60 = 426,040.40 : x
  2. Step 2: Convert to fraction form
    504,772.40/758,211.60 = 426,040.40/x
  3. Step 3: Cross multiply
    504,772.40x = 758,211.60 × 426,040.40
  4. Step 4: Simplify right side
    504,772.40x = 323,028,773,348.64
  5. Step 5: Solve for x
    x = 323,028,773,348.64/504,772.40
  6. Step 6: Final answer
    x = 639,949.36

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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.