Home / 757,611.40-1,135,629.90-308,139.40

Finding the Fourth Proportional to 757,611.40, 1,135,629.90 and 308,139.40

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Solution

The fourth proportional to 757,611.40, 1,135,629.90 and 308,139.40 is: 461,888.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    757,611.40 : 1,135,629.90 = 308,139.40 : x
  2. Step 2: Convert to fraction form
    757,611.40/1,135,629.90 = 308,139.40/x
  3. Step 3: Cross multiply
    757,611.40x = 1,135,629.90 × 308,139.40
  4. Step 4: Simplify right side
    757,611.40x = 349,932,316,008.06
  5. Step 5: Solve for x
    x = 349,932,316,008.06/757,611.40
  6. Step 6: Final answer
    x = 461,888.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.