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Finding the Fourth Proportional to 619,252.80, 927,496.80 and 478,555.20

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Solution

The fourth proportional to 619,252.80, 927,496.80 and 478,555.20 is: 716,764.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,252.80 : 927,496.80 = 478,555.20 : x
  2. Step 2: Convert to fraction form
    619,252.80/927,496.80 = 478,555.20/x
  3. Step 3: Cross multiply
    619,252.80x = 927,496.80 × 478,555.20
  4. Step 4: Simplify right side
    619,252.80x = 443,858,416,623.36
  5. Step 5: Solve for x
    x = 443,858,416,623.36/619,252.80
  6. Step 6: Final answer
    x = 716,764.49

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Double scale
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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.