Home / 810,882.55-1,216,929.71-305,941.51

Finding the Fourth Proportional to 810,882.55, 1,216,929.71 and 305,941.51

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Solution

The fourth proportional to 810,882.55, 1,216,929.71 and 305,941.51 is: 459,140.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,882.55 : 1,216,929.71 = 305,941.51 : x
  2. Step 2: Convert to fraction form
    810,882.55/1,216,929.71 = 305,941.51/x
  3. Step 3: Cross multiply
    810,882.55x = 1,216,929.71 × 305,941.51
  4. Step 4: Simplify right side
    810,882.55x = 372,309,313,041.26
  5. Step 5: Solve for x
    x = 372,309,313,041.26/810,882.55
  6. Step 6: Final answer
    x = 459,140.86

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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.