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Finding the Fourth Proportional to 504,985.84, 758,487.60 and 315,782.80

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Solution

The fourth proportional to 504,985.84, 758,487.60 and 315,782.80 is: 474,305.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,985.84 : 758,487.60 = 315,782.80 : x
  2. Step 2: Convert to fraction form
    504,985.84/758,487.60 = 315,782.80/x
  3. Step 3: Cross multiply
    504,985.84x = 758,487.60 × 315,782.80
  4. Step 4: Simplify right side
    504,985.84x = 239,517,338,093.28
  5. Step 5: Solve for x
    x = 239,517,338,093.28/504,985.84
  6. Step 6: Final answer
    x = 474,305.06

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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.