Home / 492,785.20-680,043-266,430.16

Finding the Fourth Proportional to 492,785.20, 680,043 and 266,430.16

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Solution

The fourth proportional to 492,785.20, 680,043 and 266,430.16 is: 367,673.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,785.20 : 680,043 = 266,430.16 : x
  2. Step 2: Convert to fraction form
    492,785.20/680,043 = 266,430.16/x
  3. Step 3: Cross multiply
    492,785.20x = 680,043 × 266,430.16
  4. Step 4: Simplify right side
    492,785.20x = 181,183,965,296.88
  5. Step 5: Solve for x
    x = 181,183,965,296.88/492,785.20
  6. Step 6: Final answer
    x = 367,673.31

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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.