Home / 811,672.07-1,120,140.51-449,090.06

Finding the Fourth Proportional to 811,672.07, 1,120,140.51 and 449,090.06

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Solution

The fourth proportional to 811,672.07, 1,120,140.51 and 449,090.06 is: 619,762.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,672.07 : 1,120,140.51 = 449,090.06 : x
  2. Step 2: Convert to fraction form
    811,672.07/1,120,140.51 = 449,090.06/x
  3. Step 3: Cross multiply
    811,672.07x = 1,120,140.51 × 449,090.06
  4. Step 4: Simplify right side
    811,672.07x = 503,043,968,844.33
  5. Step 5: Solve for x
    x = 503,043,968,844.33/811,672.07
  6. Step 6: Final answer
    x = 619,762.57

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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.