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Finding the Fourth Proportional to 539,700.85, 744,811.37 and 310,332.61

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Solution

The fourth proportional to 539,700.85, 744,811.37 and 310,332.61 is: 428,272.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,700.85 : 744,811.37 = 310,332.61 : x
  2. Step 2: Convert to fraction form
    539,700.85/744,811.37 = 310,332.61/x
  3. Step 3: Cross multiply
    539,700.85x = 744,811.37 × 310,332.61
  4. Step 4: Simplify right side
    539,700.85x = 231,139,256,409.78
  5. Step 5: Solve for x
    x = 231,139,256,409.78/539,700.85
  6. Step 6: Final answer
    x = 428,272.92

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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.