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Finding the Fourth Proportional to 515,948.20, 773,922.30 and 486,917.80

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Solution

The fourth proportional to 515,948.20, 773,922.30 and 486,917.80 is: 730,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,948.20 : 773,922.30 = 486,917.80 : x
  2. Step 2: Convert to fraction form
    515,948.20/773,922.30 = 486,917.80/x
  3. Step 3: Cross multiply
    515,948.20x = 773,922.30 × 486,917.80
  4. Step 4: Simplify right side
    515,948.20x = 376,836,543,686.94
  5. Step 5: Solve for x
    x = 376,836,543,686.94/515,948.20
  6. Step 6: Final answer
    x = 730,376.70

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1.5x scale

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.