Home / 1,208,721.76-1,812,781.20-355,623.64

Finding the Fourth Proportional to 1,208,721.76, 1,812,781.20 and 355,623.64

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Solution

The fourth proportional to 1,208,721.76, 1,812,781.20 and 355,623.64 is: 533,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,721.76 : 1,812,781.20 = 355,623.64 : x
  2. Step 2: Convert to fraction form
    1,208,721.76/1,812,781.20 = 355,623.64/x
  3. Step 3: Cross multiply
    1,208,721.76x = 1,812,781.20 × 355,623.64
  4. Step 4: Simplify right side
    1,208,721.76x = 644,667,848,867.57
  5. Step 5: Solve for x
    x = 644,667,848,867.57/1,208,721.76
  6. Step 6: Final answer
    x = 533,346.77

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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.