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Finding the Fourth Proportional to 555,061.73, 765,942.44 and 313,368.20

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Solution

The fourth proportional to 555,061.73, 765,942.44 and 313,368.20 is: 432,423.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,061.73 : 765,942.44 = 313,368.20 : x
  2. Step 2: Convert to fraction form
    555,061.73/765,942.44 = 313,368.20/x
  3. Step 3: Cross multiply
    555,061.73x = 765,942.44 × 313,368.20
  4. Step 4: Simplify right side
    555,061.73x = 240,021,998,329.86
  5. Step 5: Solve for x
    x = 240,021,998,329.86/555,061.73
  6. Step 6: Final answer
    x = 432,423.97

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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.