Home / 1,221,400.96-1,685,542.54-670,112.92

Finding the Fourth Proportional to 1,221,400.96, 1,685,542.54 and 670,112.92

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Solution

The fourth proportional to 1,221,400.96, 1,685,542.54 and 670,112.92 is: 924,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,400.96 : 1,685,542.54 = 670,112.92 : x
  2. Step 2: Convert to fraction form
    1,221,400.96/1,685,542.54 = 670,112.92/x
  3. Step 3: Cross multiply
    1,221,400.96x = 1,685,542.54 × 670,112.92
  4. Step 4: Simplify right side
    1,221,400.96x = 1,129,503,833,263.62
  5. Step 5: Solve for x
    x = 1,129,503,833,263.62/1,221,400.96
  6. Step 6: Final answer
    x = 924,760.89

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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.