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Finding the Fourth Proportional to 492,789.40, 680,050.34 and 266,434.90

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Solution

The fourth proportional to 492,789.40, 680,050.34 and 266,434.90 is: 367,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,789.40 : 680,050.34 = 266,434.90 : x
  2. Step 2: Convert to fraction form
    492,789.40/680,050.34 = 266,434.90/x
  3. Step 3: Cross multiply
    492,789.40x = 680,050.34 × 266,434.90
  4. Step 4: Simplify right side
    492,789.40x = 181,189,144,332.87
  5. Step 5: Solve for x
    x = 181,189,144,332.87/492,789.40
  6. Step 6: Final answer
    x = 367,680.69

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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.