Home / 1,211,553.85-1,671,955.72-667,709.22

Finding the Fourth Proportional to 1,211,553.85, 1,671,955.72 and 667,709.22

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Solution

The fourth proportional to 1,211,553.85, 1,671,955.72 and 667,709.22 is: 921,445.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,553.85 : 1,671,955.72 = 667,709.22 : x
  2. Step 2: Convert to fraction form
    1,211,553.85/1,671,955.72 = 667,709.22/x
  3. Step 3: Cross multiply
    1,211,553.85x = 1,671,955.72 × 667,709.22
  4. Step 4: Simplify right side
    1,211,553.85x = 1,116,380,249,675.74
  5. Step 5: Solve for x
    x = 1,116,380,249,675.74/1,211,553.85
  6. Step 6: Final answer
    x = 921,445.01

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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.