Home / 772,579.94-1,066,140.64-428,410.38

Finding the Fourth Proportional to 772,579.94, 1,066,140.64 and 428,410.38

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Solution

The fourth proportional to 772,579.94, 1,066,140.64 and 428,410.38 is: 591,195.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,579.94 : 1,066,140.64 = 428,410.38 : x
  2. Step 2: Convert to fraction form
    772,579.94/1,066,140.64 = 428,410.38/x
  3. Step 3: Cross multiply
    772,579.94x = 1,066,140.64 × 428,410.38
  4. Step 4: Simplify right side
    772,579.94x = 456,745,716,715.84
  5. Step 5: Solve for x
    x = 456,745,716,715.84/772,579.94
  6. Step 6: Final answer
    x = 591,195.41

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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.