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Finding the Fourth Proportional to 631,231.80, 946,847.70 and 519,038.70

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Solution

The fourth proportional to 631,231.80, 946,847.70 and 519,038.70 is: 778,558.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,231.80 : 946,847.70 = 519,038.70 : x
  2. Step 2: Convert to fraction form
    631,231.80/946,847.70 = 519,038.70/x
  3. Step 3: Cross multiply
    631,231.80x = 946,847.70 × 519,038.70
  4. Step 4: Simplify right side
    631,231.80x = 491,450,599,305.99
  5. Step 5: Solve for x
    x = 491,450,599,305.99/631,231.80
  6. Step 6: Final answer
    x = 778,558.05

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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.