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Finding the Fourth Proportional to 612,847.56, 919,719.54 and 313,578.48

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Solution

The fourth proportional to 612,847.56, 919,719.54 and 313,578.48 is: 470,597.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,847.56 : 919,719.54 = 313,578.48 : x
  2. Step 2: Convert to fraction form
    612,847.56/919,719.54 = 313,578.48/x
  3. Step 3: Cross multiply
    612,847.56x = 919,719.54 × 313,578.48
  4. Step 4: Simplify right side
    612,847.56x = 288,404,255,379.50
  5. Step 5: Solve for x
    x = 288,404,255,379.50/612,847.56
  6. Step 6: Final answer
    x = 470,597.05

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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.