Home / 919,578.17-1,269,017.87-511,706.28

Finding the Fourth Proportional to 919,578.17, 1,269,017.87 and 511,706.28

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Solution

The fourth proportional to 919,578.17, 1,269,017.87 and 511,706.28 is: 706,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,578.17 : 1,269,017.87 = 511,706.28 : x
  2. Step 2: Convert to fraction form
    919,578.17/1,269,017.87 = 511,706.28/x
  3. Step 3: Cross multiply
    919,578.17x = 1,269,017.87 × 511,706.28
  4. Step 4: Simplify right side
    919,578.17x = 649,364,413,511.22
  5. Step 5: Solve for x
    x = 649,364,413,511.22/919,578.17
  6. Step 6: Final answer
    x = 706,154.66

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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.