Home / 855,423.18-1,180,778.92-492,991.72

Finding the Fourth Proportional to 855,423.18, 1,180,778.92 and 492,991.72

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Solution

The fourth proportional to 855,423.18, 1,180,778.92 and 492,991.72 is: 680,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,423.18 : 1,180,778.92 = 492,991.72 : x
  2. Step 2: Convert to fraction form
    855,423.18/1,180,778.92 = 492,991.72/x
  3. Step 3: Cross multiply
    855,423.18x = 1,180,778.92 × 492,991.72
  4. Step 4: Simplify right side
    855,423.18x = 582,114,226,526.12
  5. Step 5: Solve for x
    x = 582,114,226,526.12/855,423.18
  6. Step 6: Final answer
    x = 680,498.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.