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Finding the Fourth Proportional to 782,578.70, 1,085,483.80 and 761,837.74

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Solution

The fourth proportional to 782,578.70, 1,085,483.80 and 761,837.74 is: 1,056,714.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,578.70 : 1,085,483.80 = 761,837.74 : x
  2. Step 2: Convert to fraction form
    782,578.70/1,085,483.80 = 761,837.74/x
  3. Step 3: Cross multiply
    782,578.70x = 1,085,483.80 × 761,837.74
  4. Step 4: Simplify right side
    782,578.70x = 826,962,524,998.61
  5. Step 5: Solve for x
    x = 826,962,524,998.61/782,578.70
  6. Step 6: Final answer
    x = 1,056,714.84

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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.