Home / 687,416.92-1,029,905.34-287,176.84

Finding the Fourth Proportional to 687,416.92, 1,029,905.34 and 287,176.84

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Solution

The fourth proportional to 687,416.92, 1,029,905.34 and 287,176.84 is: 430,255.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,416.92 : 1,029,905.34 = 287,176.84 : x
  2. Step 2: Convert to fraction form
    687,416.92/1,029,905.34 = 287,176.84/x
  3. Step 3: Cross multiply
    687,416.92x = 1,029,905.34 × 287,176.84
  4. Step 4: Simplify right side
    687,416.92x = 295,764,961,040.33
  5. Step 5: Solve for x
    x = 295,764,961,040.33/687,416.92
  6. Step 6: Final answer
    x = 430,255.57

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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.