Home / 750,709.09-1,036,078.32-428,345.29

Finding the Fourth Proportional to 750,709.09, 1,036,078.32 and 428,345.29

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Solution

The fourth proportional to 750,709.09, 1,036,078.32 and 428,345.29 is: 591,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,709.09 : 1,036,078.32 = 428,345.29 : x
  2. Step 2: Convert to fraction form
    750,709.09/1,036,078.32 = 428,345.29/x
  3. Step 3: Cross multiply
    750,709.09x = 1,036,078.32 × 428,345.29
  4. Step 4: Simplify right side
    750,709.09x = 443,799,268,443.11
  5. Step 5: Solve for x
    x = 443,799,268,443.11/750,709.09
  6. Step 6: Final answer
    x = 591,173.43

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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.