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Finding the Fourth Proportional to 626,310.16, 864,532.16 and 371,661.28

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Solution

The fourth proportional to 626,310.16, 864,532.16 and 371,661.28 is: 513,025.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,310.16 : 864,532.16 = 371,661.28 : x
  2. Step 2: Convert to fraction form
    626,310.16/864,532.16 = 371,661.28/x
  3. Step 3: Cross multiply
    626,310.16x = 864,532.16 × 371,661.28
  4. Step 4: Simplify right side
    626,310.16x = 321,313,129,186.77
  5. Step 5: Solve for x
    x = 321,313,129,186.77/626,310.16
  6. Step 6: Final answer
    x = 513,025.57

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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.