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Finding the Fourth Proportional to 560,556.86, 773,222.76 and 399,463.65

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Solution

The fourth proportional to 560,556.86, 773,222.76 and 399,463.65 is: 551,013.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,556.86 : 773,222.76 = 399,463.65 : x
  2. Step 2: Convert to fraction form
    560,556.86/773,222.76 = 399,463.65/x
  3. Step 3: Cross multiply
    560,556.86x = 773,222.76 × 399,463.65
  4. Step 4: Simplify right side
    560,556.86x = 308,874,385,972.67
  5. Step 5: Solve for x
    x = 308,874,385,972.67/560,556.86
  6. Step 6: Final answer
    x = 551,013.48

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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.