Home / 873,351.40-1,309,235.10-312,255.40

Finding the Fourth Proportional to 873,351.40, 1,309,235.10 and 312,255.40

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Solution

The fourth proportional to 873,351.40, 1,309,235.10 and 312,255.40 is: 468,099.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,351.40 : 1,309,235.10 = 312,255.40 : x
  2. Step 2: Convert to fraction form
    873,351.40/1,309,235.10 = 312,255.40/x
  3. Step 3: Cross multiply
    873,351.40x = 1,309,235.10 × 312,255.40
  4. Step 4: Simplify right side
    873,351.40x = 408,815,729,844.54
  5. Step 5: Solve for x
    x = 408,815,729,844.54/873,351.40
  6. Step 6: Final answer
    x = 468,099.93

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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.