Home / 919,981.90-1,269,574.89-512,074.96

Finding the Fourth Proportional to 919,981.90, 1,269,574.89 and 512,074.96

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Solution

The fourth proportional to 919,981.90, 1,269,574.89 and 512,074.96 is: 706,663.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,981.90 : 1,269,574.89 = 512,074.96 : x
  2. Step 2: Convert to fraction form
    919,981.90/1,269,574.89 = 512,074.96/x
  3. Step 3: Cross multiply
    919,981.90x = 1,269,574.89 × 512,074.96
  4. Step 4: Simplify right side
    919,981.90x = 650,117,511,013.75
  5. Step 5: Solve for x
    x = 650,117,511,013.75/919,981.90
  6. Step 6: Final answer
    x = 706,663.37

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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.