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Finding the Fourth Proportional to 499,572.61, 689,414.09 and 275,804.93

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Solution

The fourth proportional to 499,572.61, 689,414.09 and 275,804.93 is: 380,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,572.61 : 689,414.09 = 275,804.93 : x
  2. Step 2: Convert to fraction form
    499,572.61/689,414.09 = 275,804.93/x
  3. Step 3: Cross multiply
    499,572.61x = 689,414.09 × 275,804.93
  4. Step 4: Simplify right side
    499,572.61x = 190,143,803,778.33
  5. Step 5: Solve for x
    x = 190,143,803,778.33/499,572.61
  6. Step 6: Final answer
    x = 380,612.95

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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.