Home / 919,980.90-1,269,573.51-512,073.96

Finding the Fourth Proportional to 919,980.90, 1,269,573.51 and 512,073.96

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Solution

The fourth proportional to 919,980.90, 1,269,573.51 and 512,073.96 is: 706,661.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,980.90 : 1,269,573.51 = 512,073.96 : x
  2. Step 2: Convert to fraction form
    919,980.90/1,269,573.51 = 512,073.96/x
  3. Step 3: Cross multiply
    919,980.90x = 1,269,573.51 × 512,073.96
  4. Step 4: Simplify right side
    919,980.90x = 650,115,534,776.80
  5. Step 5: Solve for x
    x = 650,115,534,776.80/919,980.90
  6. Step 6: Final answer
    x = 706,661.99

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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.