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Finding the Fourth Proportional to 555,831.09, 767,052.95 and 326,391.12

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Solution

The fourth proportional to 555,831.09, 767,052.95 and 326,391.12 is: 450,423.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,831.09 : 767,052.95 = 326,391.12 : x
  2. Step 2: Convert to fraction form
    555,831.09/767,052.95 = 326,391.12/x
  3. Step 3: Cross multiply
    555,831.09x = 767,052.95 × 326,391.12
  4. Step 4: Simplify right side
    555,831.09x = 250,359,269,817.85
  5. Step 5: Solve for x
    x = 250,359,269,817.85/555,831.09
  6. Step 6: Final answer
    x = 450,423.29

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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.