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Finding the Fourth Proportional to 487,927.74, 673,645.92 and 313,568.68

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Solution

The fourth proportional to 487,927.74, 673,645.92 and 313,568.68 is: 432,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,927.74 : 673,645.92 = 313,568.68 : x
  2. Step 2: Convert to fraction form
    487,927.74/673,645.92 = 313,568.68/x
  3. Step 3: Cross multiply
    487,927.74x = 673,645.92 × 313,568.68
  4. Step 4: Simplify right side
    487,927.74x = 211,234,261,921.79
  5. Step 5: Solve for x
    x = 211,234,261,921.79/487,927.74
  6. Step 6: Final answer
    x = 432,921.20

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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.