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Finding the Fourth Proportional to 529,797.80, 731,110.56 and 288,078.32

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Solution

The fourth proportional to 529,797.80, 731,110.56 and 288,078.32 is: 397,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,797.80 : 731,110.56 = 288,078.32 : x
  2. Step 2: Convert to fraction form
    529,797.80/731,110.56 = 288,078.32/x
  3. Step 3: Cross multiply
    529,797.80x = 731,110.56 × 288,078.32
  4. Step 4: Simplify right side
    529,797.80x = 210,617,101,859.06
  5. Step 5: Solve for x
    x = 210,617,101,859.06/529,797.80
  6. Step 6: Final answer
    x = 397,542.42

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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.