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Finding the Fourth Proportional to 415,412.80, 622,244.40 and 336,680.80

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Solution

The fourth proportional to 415,412.80, 622,244.40 and 336,680.80 is: 504,312.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,412.80 : 622,244.40 = 336,680.80 : x
  2. Step 2: Convert to fraction form
    415,412.80/622,244.40 = 336,680.80/x
  3. Step 3: Cross multiply
    415,412.80x = 622,244.40 × 336,680.80
  4. Step 4: Simplify right side
    415,412.80x = 209,497,742,387.52
  5. Step 5: Solve for x
    x = 209,497,742,387.52/415,412.80
  6. Step 6: Final answer
    x = 504,312.20

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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.