Home / 726,881.12-1,003,128.90-404,611.76

Finding the Fourth Proportional to 726,881.12, 1,003,128.90 and 404,611.76

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Solution

The fourth proportional to 726,881.12, 1,003,128.90 and 404,611.76 is: 558,382.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,881.12 : 1,003,128.90 = 404,611.76 : x
  2. Step 2: Convert to fraction form
    726,881.12/1,003,128.90 = 404,611.76/x
  3. Step 3: Cross multiply
    726,881.12x = 1,003,128.90 × 404,611.76
  4. Step 4: Simplify right side
    726,881.12x = 405,877,749,735.86
  5. Step 5: Solve for x
    x = 405,877,749,735.86/726,881.12
  6. Step 6: Final answer
    x = 558,382.57

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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.