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Finding the Fourth Proportional to 515,629.20, 773,443.80 and 508,630.80

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Solution

The fourth proportional to 515,629.20, 773,443.80 and 508,630.80 is: 762,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,629.20 : 773,443.80 = 508,630.80 : x
  2. Step 2: Convert to fraction form
    515,629.20/773,443.80 = 508,630.80/x
  3. Step 3: Cross multiply
    515,629.20x = 773,443.80 × 508,630.80
  4. Step 4: Simplify right side
    515,629.20x = 393,397,338,749.04
  5. Step 5: Solve for x
    x = 393,397,338,749.04/515,629.20
  6. Step 6: Final answer
    x = 762,946.20

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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.