Home / 1,211,649.64-1,672,008.28-667,783.74

Finding the Fourth Proportional to 1,211,649.64, 1,672,008.28 and 667,783.74

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Solution

The fourth proportional to 1,211,649.64, 1,672,008.28 and 667,783.74 is: 921,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,649.64 : 1,672,008.28 = 667,783.74 : x
  2. Step 2: Convert to fraction form
    1,211,649.64/1,672,008.28 = 667,783.74/x
  3. Step 3: Cross multiply
    1,211,649.64x = 1,672,008.28 × 667,783.74
  4. Step 4: Simplify right side
    1,211,649.64x = 1,116,539,947,129.94
  5. Step 5: Solve for x
    x = 1,116,539,947,129.94/1,211,649.64
  6. Step 6: Final answer
    x = 921,503.97

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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.