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Finding the Fourth Proportional to 624,003.10, 936,004.65 and 413,878.30

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Solution

The fourth proportional to 624,003.10, 936,004.65 and 413,878.30 is: 620,817.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,003.10 : 936,004.65 = 413,878.30 : x
  2. Step 2: Convert to fraction form
    624,003.10/936,004.65 = 413,878.30/x
  3. Step 3: Cross multiply
    624,003.10x = 936,004.65 × 413,878.30
  4. Step 4: Simplify right side
    624,003.10x = 387,392,013,334.10
  5. Step 5: Solve for x
    x = 387,392,013,334.10/624,003.10
  6. Step 6: Final answer
    x = 620,817.45

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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.