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Finding the Fourth Proportional to 515,999.70, 773,343.45 and 459,575.10

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Solution

The fourth proportional to 515,999.70, 773,343.45 and 459,575.10 is: 688,778.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,999.70 : 773,343.45 = 459,575.10 : x
  2. Step 2: Convert to fraction form
    515,999.70/773,343.45 = 459,575.10/x
  3. Step 3: Cross multiply
    515,999.70x = 773,343.45 × 459,575.10
  4. Step 4: Simplify right side
    515,999.70x = 355,409,393,368.10
  5. Step 5: Solve for x
    x = 355,409,393,368.10/515,999.70
  6. Step 6: Final answer
    x = 688,778.29

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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.