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Finding the Fourth Proportional to 1,231,921, 1,700,050.98 and 666,673

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Solution

The fourth proportional to 1,231,921, 1,700,050.98 and 666,673 is: 920,008.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,921 : 1,700,050.98 = 666,673 : x
  2. Step 2: Convert to fraction form
    1,231,921/1,700,050.98 = 666,673/x
  3. Step 3: Cross multiply
    1,231,921x = 1,700,050.98 × 666,673
  4. Step 4: Simplify right side
    1,231,921x = 1,133,378,086,989.54
  5. Step 5: Solve for x
    x = 1,133,378,086,989.54/1,231,921
  6. Step 6: Final answer
    x = 920,008.74

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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.