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Finding the Fourth Proportional to 518,996.76, 716,199.20 and 304,279.80

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Solution

The fourth proportional to 518,996.76, 716,199.20 and 304,279.80 is: 419,896.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,996.76 : 716,199.20 = 304,279.80 : x
  2. Step 2: Convert to fraction form
    518,996.76/716,199.20 = 304,279.80/x
  3. Step 3: Cross multiply
    518,996.76x = 716,199.20 × 304,279.80
  4. Step 4: Simplify right side
    518,996.76x = 217,924,949,336.16
  5. Step 5: Solve for x
    x = 217,924,949,336.16/518,996.76
  6. Step 6: Final answer
    x = 419,896.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.