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Finding the Fourth Proportional to 501,423.86, 691,960.86 and 271,980.57

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Solution

The fourth proportional to 501,423.86, 691,960.86 and 271,980.57 is: 375,330.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,423.86 : 691,960.86 = 271,980.57 : x
  2. Step 2: Convert to fraction form
    501,423.86/691,960.86 = 271,980.57/x
  3. Step 3: Cross multiply
    501,423.86x = 691,960.86 × 271,980.57
  4. Step 4: Simplify right side
    501,423.86x = 188,199,909,120.49
  5. Step 5: Solve for x
    x = 188,199,909,120.49/501,423.86
  6. Step 6: Final answer
    x = 375,330.98

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1.5x scale

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.