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Finding the Fourth Proportional to 909,549, 1,255,160.61 and 501,688.89

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Solution

The fourth proportional to 909,549, 1,255,160.61 and 501,688.89 is: 692,321.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,549 : 1,255,160.61 = 501,688.89 : x
  2. Step 2: Convert to fraction form
    909,549/1,255,160.61 = 501,688.89/x
  3. Step 3: Cross multiply
    909,549x = 1,255,160.61 × 501,688.89
  4. Step 4: Simplify right side
    909,549x = 629,700,133,202.62
  5. Step 5: Solve for x
    x = 629,700,133,202.62/909,549
  6. Step 6: Final answer
    x = 692,321.29

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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.