Home / 1,211,687.49-1,672,123.32-660,402.30

Finding the Fourth Proportional to 1,211,687.49, 1,672,123.32 and 660,402.30

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Solution

The fourth proportional to 1,211,687.49, 1,672,123.32 and 660,402.30 is: 911,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,687.49 : 1,672,123.32 = 660,402.30 : x
  2. Step 2: Convert to fraction form
    1,211,687.49/1,672,123.32 = 660,402.30/x
  3. Step 3: Cross multiply
    1,211,687.49x = 1,672,123.32 × 660,402.30
  4. Step 4: Simplify right side
    1,211,687.49x = 1,104,274,086,411.64
  5. Step 5: Solve for x
    x = 1,104,274,086,411.64/1,211,687.49
  6. Step 6: Final answer
    x = 911,352.22

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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.