Home / 786,424.32-1,084,923.36-499,790.88

Finding the Fourth Proportional to 786,424.32, 1,084,923.36 and 499,790.88

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Solution

The fourth proportional to 786,424.32, 1,084,923.36 and 499,790.88 is: 689,493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,424.32 : 1,084,923.36 = 499,790.88 : x
  2. Step 2: Convert to fraction form
    786,424.32/1,084,923.36 = 499,790.88/x
  3. Step 3: Cross multiply
    786,424.32x = 1,084,923.36 × 499,790.88
  4. Step 4: Simplify right side
    786,424.32x = 542,234,800,826.96
  5. Step 5: Solve for x
    x = 542,234,800,826.96/786,424.32
  6. Step 6: Final answer
    x = 689,493.94

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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.