Home / 869,135.90-1,199,410.20-481,978.58

Finding the Fourth Proportional to 869,135.90, 1,199,410.20 and 481,978.58

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Solution

The fourth proportional to 869,135.90, 1,199,410.20 and 481,978.58 is: 665,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,135.90 : 1,199,410.20 = 481,978.58 : x
  2. Step 2: Convert to fraction form
    869,135.90/1,199,410.20 = 481,978.58/x
  3. Step 3: Cross multiply
    869,135.90x = 1,199,410.20 × 481,978.58
  4. Step 4: Simplify right side
    869,135.90x = 578,090,019,036.47
  5. Step 5: Solve for x
    x = 578,090,019,036.47/869,135.90
  6. Step 6: Final answer
    x = 665,131.91

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1.5x scale

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.