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Finding the Fourth Proportional to 500,309.46, 690,427.19 and 270,866.70

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Solution

The fourth proportional to 500,309.46, 690,427.19 and 270,866.70 is: 373,796.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,309.46 : 690,427.19 = 270,866.70 : x
  2. Step 2: Convert to fraction form
    500,309.46/690,427.19 = 270,866.70/x
  3. Step 3: Cross multiply
    500,309.46x = 690,427.19 × 270,866.70
  4. Step 4: Simplify right side
    500,309.46x = 187,013,735,222.74
  5. Step 5: Solve for x
    x = 187,013,735,222.74/500,309.46
  6. Step 6: Final answer
    x = 373,796.12

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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.