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Finding the Fourth Proportional to 539,597.36, 745,245.96 and 420,175.28

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Solution

The fourth proportional to 539,597.36, 745,245.96 and 420,175.28 is: 580,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,597.36 : 745,245.96 = 420,175.28 : x
  2. Step 2: Convert to fraction form
    539,597.36/745,245.96 = 420,175.28/x
  3. Step 3: Cross multiply
    539,597.36x = 745,245.96 × 420,175.28
  4. Step 4: Simplify right side
    539,597.36x = 313,133,929,911.87
  5. Step 5: Solve for x
    x = 313,133,929,911.87/539,597.36
  6. Step 6: Final answer
    x = 580,310.34

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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.