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Finding the Fourth Proportional to 684,999.29, 945,300.86 and 379,096.79

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Solution

The fourth proportional to 684,999.29, 945,300.86 and 379,096.79 is: 523,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,999.29 : 945,300.86 = 379,096.79 : x
  2. Step 2: Convert to fraction form
    684,999.29/945,300.86 = 379,096.79/x
  3. Step 3: Cross multiply
    684,999.29x = 945,300.86 × 379,096.79
  4. Step 4: Simplify right side
    684,999.29x = 358,360,514,988.25
  5. Step 5: Solve for x
    x = 358,360,514,988.25/684,999.29
  6. Step 6: Final answer
    x = 523,154.58

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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.