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Finding the Fourth Proportional to 453,906.30, 680,859.45 and 425,912.70

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Solution

The fourth proportional to 453,906.30, 680,859.45 and 425,912.70 is: 638,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,906.30 : 680,859.45 = 425,912.70 : x
  2. Step 2: Convert to fraction form
    453,906.30/680,859.45 = 425,912.70/x
  3. Step 3: Cross multiply
    453,906.30x = 680,859.45 × 425,912.70
  4. Step 4: Simplify right side
    453,906.30x = 289,986,686,670.02
  5. Step 5: Solve for x
    x = 289,986,686,670.02/453,906.30
  6. Step 6: Final answer
    x = 638,869.05

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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.