Home / 515,852.20-773,778.30-403,877.80

Finding the Fourth Proportional to 515,852.20, 773,778.30 and 403,877.80

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Solution

The fourth proportional to 515,852.20, 773,778.30 and 403,877.80 is: 605,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,852.20 : 773,778.30 = 403,877.80 : x
  2. Step 2: Convert to fraction form
    515,852.20/773,778.30 = 403,877.80/x
  3. Step 3: Cross multiply
    515,852.20x = 773,778.30 × 403,877.80
  4. Step 4: Simplify right side
    515,852.20x = 312,511,877,491.74
  5. Step 5: Solve for x
    x = 312,511,877,491.74/515,852.20
  6. Step 6: Final answer
    x = 605,816.70

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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.