Home / 811,829.28-1,217,383.92-432,679.36

Finding the Fourth Proportional to 811,829.28, 1,217,383.92 and 432,679.36

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Solution

The fourth proportional to 811,829.28, 1,217,383.92 and 432,679.36 is: 648,827.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,829.28 : 1,217,383.92 = 432,679.36 : x
  2. Step 2: Convert to fraction form
    811,829.28/1,217,383.92 = 432,679.36/x
  3. Step 3: Cross multiply
    811,829.28x = 1,217,383.92 × 432,679.36
  4. Step 4: Simplify right side
    811,829.28x = 526,736,895,379.89
  5. Step 5: Solve for x
    x = 526,736,895,379.89/811,829.28
  6. Step 6: Final answer
    x = 648,827.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.