Home / 1,221,091.76-1,685,207.52-677,402.96

Finding the Fourth Proportional to 1,221,091.76, 1,685,207.52 and 677,402.96

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Solution

The fourth proportional to 1,221,091.76, 1,685,207.52 and 677,402.96 is: 934,872.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,091.76 : 1,685,207.52 = 677,402.96 : x
  2. Step 2: Convert to fraction form
    1,221,091.76/1,685,207.52 = 677,402.96/x
  3. Step 3: Cross multiply
    1,221,091.76x = 1,685,207.52 × 677,402.96
  4. Step 4: Simplify right side
    1,221,091.76x = 1,141,564,562,262.26
  5. Step 5: Solve for x
    x = 1,141,564,562,262.26/1,221,091.76
  6. Step 6: Final answer
    x = 934,872.05

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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.