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Finding the Fourth Proportional to 721,396.32, 994,913.28 and 434,856.48

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Solution

The fourth proportional to 721,396.32, 994,913.28 and 434,856.48 is: 599,732.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,396.32 : 994,913.28 = 434,856.48 : x
  2. Step 2: Convert to fraction form
    721,396.32/994,913.28 = 434,856.48/x
  3. Step 3: Cross multiply
    721,396.32x = 994,913.28 × 434,856.48
  4. Step 4: Simplify right side
    721,396.32x = 432,644,486,846.05
  5. Step 5: Solve for x
    x = 432,644,486,846.05/721,396.32
  6. Step 6: Final answer
    x = 599,732.04

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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.