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Finding the Fourth Proportional to 626,964.96, 865,265.16 and 355,080.48

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Solution

The fourth proportional to 626,964.96, 865,265.16 and 355,080.48 is: 490,041.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,964.96 : 865,265.16 = 355,080.48 : x
  2. Step 2: Convert to fraction form
    626,964.96/865,265.16 = 355,080.48/x
  3. Step 3: Cross multiply
    626,964.96x = 865,265.16 × 355,080.48
  4. Step 4: Simplify right side
    626,964.96x = 307,238,768,340.08
  5. Step 5: Solve for x
    x = 307,238,768,340.08/626,964.96
  6. Step 6: Final answer
    x = 490,041.37

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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.