Home / 516,418.03-712,611.52-286,960.78

Finding the Fourth Proportional to 516,418.03, 712,611.52 and 286,960.78

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Solution

The fourth proportional to 516,418.03, 712,611.52 and 286,960.78 is: 395,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,418.03 : 712,611.52 = 286,960.78 : x
  2. Step 2: Convert to fraction form
    516,418.03/712,611.52 = 286,960.78/x
  3. Step 3: Cross multiply
    516,418.03x = 712,611.52 × 286,960.78
  4. Step 4: Simplify right side
    516,418.03x = 204,491,555,117.26
  5. Step 5: Solve for x
    x = 204,491,555,117.26/516,418.03
  6. Step 6: Final answer
    x = 395,980.67

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1.5x scale

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.