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Finding the Fourth Proportional to 626,937.76, 865,227.72 and 355,053.76

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Solution

The fourth proportional to 626,937.76, 865,227.72 and 355,053.76 is: 490,004.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,937.76 : 865,227.72 = 355,053.76 : x
  2. Step 2: Convert to fraction form
    626,937.76/865,227.72 = 355,053.76/x
  3. Step 3: Cross multiply
    626,937.76x = 865,227.72 × 355,053.76
  4. Step 4: Simplify right side
    626,937.76x = 307,202,355,242.23
  5. Step 5: Solve for x
    x = 307,202,355,242.23/626,937.76
  6. Step 6: Final answer
    x = 490,004.55

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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.