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Finding the Fourth Proportional to 768,520.56, 1,060,554.28 and 446,309.88

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Solution

The fourth proportional to 768,520.56, 1,060,554.28 and 446,309.88 is: 615,905.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,520.56 : 1,060,554.28 = 446,309.88 : x
  2. Step 2: Convert to fraction form
    768,520.56/1,060,554.28 = 446,309.88/x
  3. Step 3: Cross multiply
    768,520.56x = 1,060,554.28 × 446,309.88
  4. Step 4: Simplify right side
    768,520.56x = 473,335,853,440.29
  5. Step 5: Solve for x
    x = 473,335,853,440.29/768,520.56
  6. Step 6: Final answer
    x = 615,905.26

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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.