Home / 1,125,920.89-1,553,881.76-642,558.79

Finding the Fourth Proportional to 1,125,920.89, 1,553,881.76 and 642,558.79

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Solution

The fourth proportional to 1,125,920.89, 1,553,881.76 and 642,558.79 is: 886,794.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,920.89 : 1,553,881.76 = 642,558.79 : x
  2. Step 2: Convert to fraction form
    1,125,920.89/1,553,881.76 = 642,558.79/x
  3. Step 3: Cross multiply
    1,125,920.89x = 1,553,881.76 × 642,558.79
  4. Step 4: Simplify right side
    1,125,920.89x = 998,460,383,508.67
  5. Step 5: Solve for x
    x = 998,460,383,508.67/1,125,920.89
  6. Step 6: Final answer
    x = 886,794.44

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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.