Home / 772,179.79-1,065,247.69-485,857.75

Finding the Fourth Proportional to 772,179.79, 1,065,247.69 and 485,857.75

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Solution

The fourth proportional to 772,179.79, 1,065,247.69 and 485,857.75 is: 670,256.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,179.79 : 1,065,247.69 = 485,857.75 : x
  2. Step 2: Convert to fraction form
    772,179.79/1,065,247.69 = 485,857.75/x
  3. Step 3: Cross multiply
    772,179.79x = 1,065,247.69 × 485,857.75
  4. Step 4: Simplify right side
    772,179.79x = 517,558,845,856.10
  5. Step 5: Solve for x
    x = 517,558,845,856.10/772,179.79
  6. Step 6: Final answer
    x = 670,256.92

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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.