Home / 493,430.24-680,895.71-278,591.51

Finding the Fourth Proportional to 493,430.24, 680,895.71 and 278,591.51

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Solution

The fourth proportional to 493,430.24, 680,895.71 and 278,591.51 is: 384,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,430.24 : 680,895.71 = 278,591.51 : x
  2. Step 2: Convert to fraction form
    493,430.24/680,895.71 = 278,591.51/x
  3. Step 3: Cross multiply
    493,430.24x = 680,895.71 × 278,591.51
  4. Step 4: Simplify right side
    493,430.24x = 189,691,759,203.99
  5. Step 5: Solve for x
    x = 189,691,759,203.99/493,430.24
  6. Step 6: Final answer
    x = 384,434.81

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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.