Home / 465,728.40-642,949.92-313,566.66

Finding the Fourth Proportional to 465,728.40, 642,949.92 and 313,566.66

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Solution

The fourth proportional to 465,728.40, 642,949.92 and 313,566.66 is: 432,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,728.40 : 642,949.92 = 313,566.66 : x
  2. Step 2: Convert to fraction form
    465,728.40/642,949.92 = 313,566.66/x
  3. Step 3: Cross multiply
    465,728.40x = 642,949.92 × 313,566.66
  4. Step 4: Simplify right side
    465,728.40x = 201,607,658,961.67
  5. Step 5: Solve for x
    x = 201,607,658,961.67/465,728.40
  6. Step 6: Final answer
    x = 432,886.76

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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.