Home / 1,210,911.77-1,671,189.51-667,103.28

Finding the Fourth Proportional to 1,210,911.77, 1,671,189.51 and 667,103.28

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Solution

The fourth proportional to 1,210,911.77, 1,671,189.51 and 667,103.28 is: 920,674.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,911.77 : 1,671,189.51 = 667,103.28 : x
  2. Step 2: Convert to fraction form
    1,210,911.77/1,671,189.51 = 667,103.28/x
  3. Step 3: Cross multiply
    1,210,911.77x = 1,671,189.51 × 667,103.28
  4. Step 4: Simplify right side
    1,210,911.77x = 1,114,856,003,622.59
  5. Step 5: Solve for x
    x = 1,114,856,003,622.59/1,210,911.77
  6. Step 6: Final answer
    x = 920,674.85

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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.