Home / 469,323.12-647,755.20-278,441.76

Finding the Fourth Proportional to 469,323.12, 647,755.20 and 278,441.76

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Solution

The fourth proportional to 469,323.12, 647,755.20 and 278,441.76 is: 384,302.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,323.12 : 647,755.20 = 278,441.76 : x
  2. Step 2: Convert to fraction form
    469,323.12/647,755.20 = 278,441.76/x
  3. Step 3: Cross multiply
    469,323.12x = 647,755.20 × 278,441.76
  4. Step 4: Simplify right side
    469,323.12x = 180,362,097,937.15
  5. Step 5: Solve for x
    x = 180,362,097,937.15/469,323.12
  6. Step 6: Final answer
    x = 384,302.61

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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.