Home / 391,146.45-540,769.26-289,010.82

Finding the Fourth Proportional to 391,146.45, 540,769.26 and 289,010.82

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Solution

The fourth proportional to 391,146.45, 540,769.26 and 289,010.82 is: 399,564.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,146.45 : 540,769.26 = 289,010.82 : x
  2. Step 2: Convert to fraction form
    391,146.45/540,769.26 = 289,010.82/x
  3. Step 3: Cross multiply
    391,146.45x = 540,769.26 × 289,010.82
  4. Step 4: Simplify right side
    391,146.45x = 156,288,167,263.39
  5. Step 5: Solve for x
    x = 156,288,167,263.39/391,146.45
  6. Step 6: Final answer
    x = 399,564.32

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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.