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Finding the Fourth Proportional to 766,575.70, 1,149,863.55 and 761,326.90

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Solution

The fourth proportional to 766,575.70, 1,149,863.55 and 761,326.90 is: 1,141,990.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,575.70 : 1,149,863.55 = 761,326.90 : x
  2. Step 2: Convert to fraction form
    766,575.70/1,149,863.55 = 761,326.90/x
  3. Step 3: Cross multiply
    766,575.70x = 1,149,863.55 × 761,326.90
  4. Step 4: Simplify right side
    766,575.70x = 875,422,051,944.50
  5. Step 5: Solve for x
    x = 875,422,051,944.50/766,575.70
  6. Step 6: Final answer
    x = 1,141,990.35

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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.