Home / 667,429.13-921,053.77-361,504.28

Finding the Fourth Proportional to 667,429.13, 921,053.77 and 361,504.28

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Solution

The fourth proportional to 667,429.13, 921,053.77 and 361,504.28 is: 498,876.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,429.13 : 921,053.77 = 361,504.28 : x
  2. Step 2: Convert to fraction form
    667,429.13/921,053.77 = 361,504.28/x
  3. Step 3: Cross multiply
    667,429.13x = 921,053.77 × 361,504.28
  4. Step 4: Simplify right side
    667,429.13x = 332,964,881,364.01
  5. Step 5: Solve for x
    x = 332,964,881,364.01/667,429.13
  6. Step 6: Final answer
    x = 498,876.76

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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.