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Finding the Fourth Proportional to 620,612.40, 930,918.60 and 246,635.40

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Solution

The fourth proportional to 620,612.40, 930,918.60 and 246,635.40 is: 369,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,612.40 : 930,918.60 = 246,635.40 : x
  2. Step 2: Convert to fraction form
    620,612.40/930,918.60 = 246,635.40/x
  3. Step 3: Cross multiply
    620,612.40x = 930,918.60 × 246,635.40
  4. Step 4: Simplify right side
    620,612.40x = 229,597,481,278.44
  5. Step 5: Solve for x
    x = 229,597,481,278.44/620,612.40
  6. Step 6: Final answer
    x = 369,953.10

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Double scale
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Similar ratio
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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.