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Finding the Fourth Proportional to 454,379.90, 681,569.85 and 312,662.30

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Solution

The fourth proportional to 454,379.90, 681,569.85 and 312,662.30 is: 468,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,379.90 : 681,569.85 = 312,662.30 : x
  2. Step 2: Convert to fraction form
    454,379.90/681,569.85 = 312,662.30/x
  3. Step 3: Cross multiply
    454,379.90x = 681,569.85 × 312,662.30
  4. Step 4: Simplify right side
    454,379.90x = 213,101,196,911.66
  5. Step 5: Solve for x
    x = 213,101,196,911.66/454,379.90
  6. Step 6: Final answer
    x = 468,993.45

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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.