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Finding the Fourth Proportional to 650,912.70, 976,945.05 and 384,339.90

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Solution

The fourth proportional to 650,912.70, 976,945.05 and 384,339.90 is: 576,849.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,912.70 : 976,945.05 = 384,339.90 : x
  2. Step 2: Convert to fraction form
    650,912.70/976,945.05 = 384,339.90/x
  3. Step 3: Cross multiply
    650,912.70x = 976,945.05 × 384,339.90
  4. Step 4: Simplify right side
    650,912.70x = 375,478,962,822.50
  5. Step 5: Solve for x
    x = 375,478,962,822.50/650,912.70
  6. Step 6: Final answer
    x = 576,849.96

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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.