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Finding the Fourth Proportional to 626,834.37, 865,007.17 and 340,347.90

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Solution

The fourth proportional to 626,834.37, 865,007.17 and 340,347.90 is: 469,666.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,834.37 : 865,007.17 = 340,347.90 : x
  2. Step 2: Convert to fraction form
    626,834.37/865,007.17 = 340,347.90/x
  3. Step 3: Cross multiply
    626,834.37x = 865,007.17 × 340,347.90
  4. Step 4: Simplify right side
    626,834.37x = 294,403,373,794.44
  5. Step 5: Solve for x
    x = 294,403,373,794.44/626,834.37
  6. Step 6: Final answer
    x = 469,666.93

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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.