Home / 1,211,861.69-1,672,368.72-668,006.56

Finding the Fourth Proportional to 1,211,861.69, 1,672,368.72 and 668,006.56

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Solution

The fourth proportional to 1,211,861.69, 1,672,368.72 and 668,006.56 is: 921,848.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,861.69 : 1,672,368.72 = 668,006.56 : x
  2. Step 2: Convert to fraction form
    1,211,861.69/1,672,368.72 = 668,006.56/x
  3. Step 3: Cross multiply
    1,211,861.69x = 1,672,368.72 × 668,006.56
  4. Step 4: Simplify right side
    1,211,861.69x = 1,117,153,275,284.24
  5. Step 5: Solve for x
    x = 1,117,153,275,284.24/1,211,861.69
  6. Step 6: Final answer
    x = 921,848.83

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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.