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Finding the Fourth Proportional to 539,735.11, 744,878.28 and 310,366.96

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Solution

The fourth proportional to 539,735.11, 744,878.28 and 310,366.96 is: 428,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,735.11 : 744,878.28 = 310,366.96 : x
  2. Step 2: Convert to fraction form
    539,735.11/744,878.28 = 310,366.96/x
  3. Step 3: Cross multiply
    539,735.11x = 744,878.28 × 310,366.96
  4. Step 4: Simplify right side
    539,735.11x = 231,185,604,889.50
  5. Step 5: Solve for x
    x = 231,185,604,889.50/539,735.11
  6. Step 6: Final answer
    x = 428,331.60

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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.