Home / 810,858.76-1,216,099.52-305,470.40

Finding the Fourth Proportional to 810,858.76, 1,216,099.52 and 305,470.40

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Solution

The fourth proportional to 810,858.76, 1,216,099.52 and 305,470.40 is: 458,134.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,858.76 : 1,216,099.52 = 305,470.40 : x
  2. Step 2: Convert to fraction form
    810,858.76/1,216,099.52 = 305,470.40/x
  3. Step 3: Cross multiply
    810,858.76x = 1,216,099.52 × 305,470.40
  4. Step 4: Simplify right side
    810,858.76x = 371,482,406,814.21
  5. Step 5: Solve for x
    x = 371,482,406,814.21/810,858.76
  6. Step 6: Final answer
    x = 458,134.54

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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.