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Finding the Fourth Proportional to 515,860.40, 773,790.60 and 410,106.80

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Solution

The fourth proportional to 515,860.40, 773,790.60 and 410,106.80 is: 615,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,860.40 : 773,790.60 = 410,106.80 : x
  2. Step 2: Convert to fraction form
    515,860.40/773,790.60 = 410,106.80/x
  3. Step 3: Cross multiply
    515,860.40x = 773,790.60 × 410,106.80
  4. Step 4: Simplify right side
    515,860.40x = 317,336,786,836.08
  5. Step 5: Solve for x
    x = 317,336,786,836.08/515,860.40
  6. Step 6: Final answer
    x = 615,160.20

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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.