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Finding the Fourth Proportional to 768,676.40, 1,060,871.28 and 446,322.32

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Solution

The fourth proportional to 768,676.40, 1,060,871.28 and 446,322.32 is: 615,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,676.40 : 1,060,871.28 = 446,322.32 : x
  2. Step 2: Convert to fraction form
    768,676.40/1,060,871.28 = 446,322.32/x
  3. Step 3: Cross multiply
    768,676.40x = 1,060,871.28 × 446,322.32
  4. Step 4: Simplify right side
    768,676.40x = 473,490,530,910.97
  5. Step 5: Solve for x
    x = 473,490,530,910.97/768,676.40
  6. Step 6: Final answer
    x = 615,981.62

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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.